220-1201 Sample Questions Answers

Older motherboards use 20-pin connectors, while newer power supplies use 24-pin connectors. An adapter resolves the compatibility issue cost-effectively.

Why Not A (Adjust the input voltage): Input voltage adjustment is unrelated to connector compatibility.

Why Not B (Install a modular power supply): While modular supplies are versatile, this doesn’t address the connector issue directly.

Why Not C (Rebuild the failed power supply): Rebuilding is costly and complex compared to using an adapter.

CompTIA A+ Exam Reference: Core 1 (220-1201), Section 3.4, power supply compatibility​.

The correct answer is A. Containers .

According to CompTIA A+ Core 1 220-1201 objectives under Networking and Cloud/Virtualization Concepts:

Containers provide lightweight, portable environments that package applications and their dependencies, allowing them to run consistently across multiple environments.

Containers are ideal for development teams because they require minimal underlying infrastructure, can be quickly deployed or destroyed, and isolate applications from the host system, making it easier to manage multiple applications simultaneously.

Why the other options are incorrect:

B. IaaS (Infrastructure as a Service): Provides virtualized hardware over the cloud but is more general-purpose; it includes virtual machines, storage, and networking, not minimal isolated application environments.

C. SaaS (Software as a Service): Provides fully managed software to end-users; not intended for deploying custom web applications by a development team.

D. Desktop virtualization: Provides virtual desktop environments to users; it does not provide a minimal, disposable platform for web application development.

The correct answer is C. Virtualization .

According to CompTIA A+ Core 1 220-1201 objectives under Networking and Cloud/Virtualization Concepts:

Virtualization allows a single physical server to host multiple virtual machines (VMs), each running its own operating system and applications.

This reduces hardware costs because fewer physical servers are required to run multiple workloads, and it improves resource utilization, scalability, and management.

Why the other options are incorrect:

A. Containerization: Optimizes application deployment by packaging applications and dependencies, but containers share the host OS kernel and are not full OS instances.

B. Cloud computing: Refers to delivering computing services over the internet; it can use virtualization but is broader and not specifically focused on reducing physical hardware.

D. Remote desktop services: Provides remote access to desktops or applications; it does not reduce hardware requirements for hosting multiple OS environments.

A printer with text boxes AI-generated content may be incorrect.

The correct answer is C. Synchronized system clocks .

According to CompTIA A+ Core 1 220-1201 objectives under Networking and Server Services, NTP (Network Time Protocol) is used to synchronize the clocks of computers across a network to a common time source. This is critical for:

Ensuring accurate timestamps for logs and events.

Coordinating scheduled tasks across multiple systems.

Preventing authentication issues in environments that rely on time-based credentials (e.g., Kerberos).

Why the other options are incorrect:

A. Defined network transport protocols: NTP itself is a protocol that uses UDP, but its primary purpose is not defining transport protocols.

B. Enabled print services on the server: NTP does not relate to printing.

D. Defined server options in DHCP: NTP may be referenced by DHCP options, but the act of adding NTP to a server is focused on time synchronization, not DHCP configuration.

A Trusted Platform Module (TPM) is a hardware chip used to enable encryption technologies such as BitLocker, providing secure key storage for system-wide encryption.

From CompTIA A+ 220-1101 Official Study Guide, Objective 3.5 – Security features:

“A TPM chip is required for system encryption, storing encryption keys securely on the hardware.”

Verified Source:

CompTIA A+ Core 1 (220-1101) Official Study Guide, Chapter 3: Security Hardware

CompTIA Exam Objectives 220-1101, Domain 3.5

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Overheating is a common cause of projectors shutting down after extended use. A clogged air filter can cause overheating, resulting in intermittent shutdowns.

From CompTIA A+ 220-1101 Official Study Guide, Objective 4.1 – Troubleshooting displays:

“If a projector shuts down after running for a period, clean or replace the filter to prevent overheating and automatic shutdown.”

Verified Source:

CompTIA A+ Core 1 (220-1101) Official Study Guide, Chapter 4: Display Troubleshooting

CompTIA Exam Objectives 220-1101, Domain 4.1

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Amodular power supplyallows a technician toconnect only the power cables that are needed, reducing clutter and improving airflow. This is ideal when aiming for a clean build withminimal visible internal cables.

Option A (SATA drive connections):Still require both power and data cables, adding to cable count.

Option B (Liquid cooling):May reduce some bulk from large air coolers, but adds tubing and still needs cabling.

Option D (Wireless NIC):Adds wireless capability but has no relation to internal cabling cleanliness.

CompTIA A+ Core 1 Exam Objective Reference:

Objective 3.3: Given a scenario, apply the appropriate PC configuration.

CompTIA A+ teaches that vertical lines on scanned or copied documents but not printed documents indicate a dirty or smudged scanner glass or ADF glass strip. Dust, ink smears, or debris create a line because the scanning sensor repeatedly passes over the same contaminated area.

If printing works normally, internal printer components such as the transfer roller or pickup rollers are not at fault. Maintenance kits apply to internal wear components like rollers, belts, or fusers not scanning artifacts.

Cleaning the scanner glass or ADF strip directly addresses this common problem. The A+ exam frequently includes troubleshooting questions about print vs. scan artifacts, and this scenario is a classic example.

Therefore, the correct solution is to clean the glass bed (or ADF strip).

The first consideration for a desktop CPU upgrade is the socket type, because the processor must be physically and electrically compatible with the motherboard. In CompTIA A+ Core 1 hardware terms, CPUs are designed for specific sockets (for example, Intel LGA or AMD AM-series), and a mismatch means the CPU simply cannot be installed. Even within the same brand, different generations may use different sockets, and the motherboard’s chipset and BIOS/UEFI must also support the selected CPU model. If the socket is wrong, factors like core count, frequency, and integrated graphics become irrelevant because the system will not POST or function.

After confirming socket compatibility, the technician would typically evaluate other constraints such as BIOS/UEFI update requirements, power and cooling (TDP and heatsink/fan capability), and RAM compatibility supported by the platform. Only then do performance-related preferences like core count (multitasking), bus/clock characteristics, or whether an integrated GPU is needed (if no discrete video card is present) become meaningful selection criteria. Therefore, the correct first consideration is the motherboard socket type.

A workstation running three high-end GPUs requires a power supply capable of both high wattage and stable, reliable output. In CompTIA A+ power supply fundamentals, modularity and redundancy are emphasized for high-performance and mission-critical systems.

Modularity (B) allows the technician to connect only the necessary cables, reducing clutter, improving airflow, and enabling proper cable routing to multiple GPUs. High-end graphics cards require multiple PCIe connectors, and modular PSUs provide the flexibility to attach the exact number of required GPU power cables. This is important for systems where space management and cooling efficiency directly affect performance and component longevity.

Redundancy (D) is critical for mission-critical workstations used for 3-D modeling and rendering. A redundant power supply ensures that if one PSU module fails, the system continues running without interruption. CompTIA A+ highlights redundancy as a key feature in professional environments where uptime is essential. These systems typically use dual hot-swappable power modules to guarantee continuous power delivery.

The other options do not meaningfully address the requirements. A 12V output is standard on all PSUs. A 20-pin connector is outdated; modern motherboards use 24-pin. The 3.3V rail is not relevant to GPU loads, and 240 VAC input only refers to wall power compatibility, not PSU capability. Therefore, modularity and redundancy best meet the workstation’s needs.

ECC (Error-Correcting Code) RAM is commonly used in servers because it can detect and correct memory errors, providing greater stability and reliability for mission-critical environments.

From CompTIA A+ 220-1101 Official Study Guide, Objective 3.2 – Types of RAM:

“Servers often require ECC memory, which can detect and correct single-bit errors, preventing data corruption and increasing system reliability.”

Verified Source:

CompTIA A+ Core 1 (220-1101) Official Study Guide, Chapter 3: Memory Technologies

CompTIA Exam Objectives 220-1101, Domain 3.2

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Assigning a static IP to network printers ensures the printer ' s address does not change after outages or DHCP lease expirations, preventing connectivity issues.

From CompTIA A+ 220-1101 Official Study Guide, Objective 3.4 – Printer network configuration:

“Printers should use static IPs to ensure they remain reachable and do not change addresses after network events.”

Verified Source:

CompTIA A+ Core 1 (220-1101) Official Study Guide, Chapter 3: Printer Networking

CompTIA Exam Objectives 220-1101, Domain 3.4

A Storage Area Network (SAN) is primarily used for data archiving and large-scale storage. SANs provide high-speed, block-level storage for enterprise environments.

Why Not A (PAN): Personal Area Networks are for connecting personal devices like phones and smartwatches.

Why Not B (MAN): Metropolitan Area Networks are for city-wide data communication, not storage.

Why Not D (LAN): Local Area Networks are for general connectivity, not dedicated storage.

Why Not WAN: Wide Area Networks are for connecting geographically dispersed networks, not storage.

CompTIA A+ Exam Reference: Core 1 (220-1201), Section 2.7, network types and purposes​.

Intermittent VoIP call quality issues that occur during peak hours are a classic symptom of network congestion caused by voice and data traffic competing for the same network resources. According to CompTIA Core 1 (220-1201) networking and VoIP objectives, one of the most effective solutions is to configure VLANs to separate voice and data traffic.

By placing VoIP devices on a dedicated voice VLAN, the network can apply Quality of Service (QoS) policies that prioritize voice packets over standard data traffic. This reduces latency, jitter, and packet loss, which are the primary causes of poor call quality. VLAN separation ensures that even during heavy data usage, voice traffic remains clear and reliable.

Routing calls through a gigabit port does not address traffic prioritization and is unlikely to resolve congestion during peak usage. Installing shielded network cables only helps in environments with excessive electromagnetic interference, which would affect performance consistently—not intermittently. Increasing the VoIP bit rate would actually worsen congestion by consuming more bandwidth.

CompTIA emphasizes VLAN implementation and QoS as best practices for VoIP deployments, especially when call quality degrades under high network utilization.

Whenever a CPU heat sink is removed or replaced, thermal paste must be reapplied. Thermal paste fills microscopic gaps between the CPU heat spreader and the heat sink, ensuring efficient heat transfer. Without it, there is a significant air gap, which acts as an insulator, causing CPU temperatures to rise dramatically even under light load. CompTIA A+ stresses thermal compound application as a key step in CPU cooling installation.

The scenario indicates that temperatures increased drastically after upgrading to a better heat sink. A higher-performing heat sink should improve temperatures, not worsen them—unless a critical installation step was missed. Missing thermal paste is the most common cause of this symptom and easily explains the sudden overheating.

Decreased CPU voltage would lower temperatures, not raise them. Higher fan RPM increases cooling efficiency, not reduces it. Airflow interruption is possible but less likely in a simple heat sink upgrade scenario unless the technician installed the CPU cooler incorrectly; however, the most direct and common cause described by CompTIA is missing thermal paste.

Thus, D is the correct answer.

For a main database server with high read/write activity, the best RAID choice must deliver strong performance while still providing fault tolerance. Per CompTIA A+ Core 1 (220-1201) storage/RAID objectives, RAID 10 (1+0) combines disk mirroring (RAID 1) and disk striping (RAID 0). Striping improves performance by distributing read/write operations across multiple disks, which is ideal for databases that perform frequent transactions. Mirroring provides redundancy by keeping an identical copy of data on a paired drive, allowing the system to tolerate drive failures (typically one drive per mirrored pair) without data loss.

RAID 0 is fast but offers no redundancy, making it inappropriate for critical servers. RAID 5 and RAID 6 use parity, which provides redundancy but introduces a write penalty because parity must be calculated and written during updates—often a poor fit for workloads with heavy random writes like databases. RAID 6 is even more write-intensive

The correct answer is B. Secure Boot .

According to CompTIA A+ Core 1 220-1201 objectives under Security:

Secure Boot is a UEFI firmware feature that ensures a computer boots only with software that is trusted and digitally signed by the manufacturer.

This prevents malicious or unauthorized bootloaders and operating systems from loading, protecting the system from rootkits and other boot-time attacks.

Secure Boot does not require disabling USB devices; it simply checks that any bootable device contains a signed operating system.

Why the other options are incorrect:

A. BIOS password: Protects access to BIOS/UEFI settings but does not verify trusted software during boot.

C. USB settings: Can control USB access but cannot enforce boot validation for signed OS or prevent unauthorized boot devices.

D. Single sign-on: Provides authentication convenience for users, unrelated to boot security.

The correct answer is D. Dual channel .

In the CompTIA A+ Core 1 (220-1201) hardware objectives, memory bandwidth refers to the amount of data that can be transferred between RAM and the CPU in a given amount of time.

Dual channel memory architecture increases bandwidth by:

Allowing the memory controller to access two memory modules simultaneously

Effectively doubling the data transfer rate compared to single-channel configurations

Improving overall system performance, especially in memory-intensive tasks

Why the other options are incorrect:

A. CAS latency

CAS latency measures the delay before data is available after a request. Lower latency improves response time, but it does not significantly increase total bandwidth.

B. ECC

ECC (Error-Correcting Code) improves reliability by detecting and correcting errors, but it does not increase data transfer bandwidth.

C. High clock speed

Higher clock speed does increase bandwidth, but not as significantly as enabling dual channel , which allows parallel data transfer paths and provides a greater overall increase.

Final Answer: D. Dual channel

The correct answer is D. WLAN (Wireless Local Area Network) .

According to CompTIA A+ Core 1 220-1201 objectives under Networking:

A WLAN is a wireless network that covers a limited area such as an office, building, or campus.

Using a heat map helps administrators determine optimal placement of access points, identify areas of weak signal, and plan coverage for employees’ devices.

Why the other options are incorrect:

A. SAN (Storage Area Network): Connects storage devices over a network; not used for wireless coverage.

B. PAN (Personal Area Network): Covers a very small area, such as a single person’s devices (Bluetooth, USB, etc.), not a whole office.

C. MAN (Metropolitan Area Network): Covers a city or large geographic area; too large for a floor plan.

The correct answer is A. 2.4GHz .

In the CompTIA A+ Core 1 220-1201 networking objectives, wireless networking technologies include frequency bands such as 2.4GHz, 5GHz, and 6GHz , along with related concepts like channels, regulations, channel selection, Bluetooth, 802.11 standards, NFC, and RFID.

The 2.4GHz band supports the most devices because it is the oldest and most widely adopted Wi-Fi frequency listed. Many legacy devices, including older laptops, printers, IoT devices, smart home devices, and wireless peripherals, still rely on 2.4GHz. It also has better range and wall penetration than higher-frequency bands, although it is usually more crowded and slower.

Why the other options are incorrect:

B. 5GHz

5GHz is newer than 2.4GHz and generally provides faster speeds with less interference, but it does not support as many older legacy devices.

C. 6GHz

6GHz is the newest Wi-Fi frequency option used with newer Wi-Fi standards, so it has the least legacy device support among the Wi-Fi frequency choices.

D. NFC

NFC is a short-range communication technology, not a Wi-Fi frequency band. It is used for close-proximity functions such as tap-to-pay, pairing, and access cards, so it is not the best answer.

Final Answer: A. 2.4GHz

In the CompTIA A+ Core 1 (220-1201) exam objectives, cloud deployment models describe how and where computing resources are hosted and who has access to them. A private cloud is defined as a cloud environment that is dedicated to a single organization and may be hosted on-premises within the company’s own data center or in a dedicated external facility. Since the question states that the directory services server is located on premises, it indicates that the organization is hosting and managing its own infrastructure internally. This aligns directly with the definition of a private cloud deployment model.

Directory services—such as Microsoft Active Directory or LDAP-based services—are commonly deployed internally to manage user authentication, authorization, group policies, and resource access within an organization. When these services run on company-owned hardware inside the organization’s network, the infrastructure remains under the organization’s full administrative control, security policies, and management.

The other options do not match this scenario. A public cloud is hosted by third-party providers and shared among multiple customers ☁. A hybrid cloud combines on-premises infrastructure with public cloud services. A community cloud is shared by multiple organizations with similar requirements. Because the system is hosted internally for a single organization, the correct classification is Private Cloud .

A corporate-provided email client is designed to integrate with enterprise services such as shared mailboxes, MDM policies, and enterprise authentication. CompTIA A+ states that corporate clients support additional management features, secure authentication protocols (such as OAuth or Kerberos), and policy-enforced access control essential for accessing shared or departmental mailboxes.

Open-source clients (Option A) may lack compatibility with enterprise environments. Built-in smartphone clients (Option B) often don’t support complex mailbox structures such as shared mailboxes. Employee-preferred apps (Option D) are discouraged because they may not meet security requirements.

Corporate clients ensure full compatibility with organizational mail servers, shared folders, calendars, and enterprise security features, making corporate email clients the correct choice according to CompTIA’s mobile device email configuration standards.

If a laptop has a USB flash drive connected during startup, the system firmware BIOS or UEFI may attempt to boot from that USB device depending on the configured boot order or boot priority. This can cause intermittent startup behavior because the laptop might sometimes detect the flash drive as a bootable device and try to load from it instead of the internal drive, leading to delays, boot errors, or unexpected screens. The correct fix is to adjust boot options in BIOS/UEFI: set the internal SSD/HDD as the first boot device, reduce the priority of USB boot devices, or disable booting from external media when appropriate for the environment. This addresses the root cause directly and prevents the presence of a flash drive from affecting normal startup.

BitLocker and TPM features relate to drive encryption and secure key storage and are not the primary reason the system is changing its boot behavior. “USB Enable” would control whether USB ports function, but disabling USB entirely is not a targeted first step and could break keyboards/mice or legitimate USB use. Therefore, the correct configuration item is Boot options.

PoE (Power over Ethernet) allows both data and electrical power to be delivered over the same Ethernet cable. A PoE injector adds power to Ethernet cables for devices that need it.

From CompTIA A+ 220-1101 Official Study Guide, Objective 2.2 – Networking hardware:

“Power over Ethernet (PoE) technology and PoE injectors enable both power and data transmission to compatible network devices like access points and IP cameras.”

Verified Source:

CompTIA A+ Core 1 (220-1101) Official Study Guide, Chapter 2: Network Hardware

CompTIA Exam Objectives 220-1101, Domain 2.2

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The correct statement when comparing DDR3 and DDR4 memory technologies is that DDR4 offers faster data transfer rates compared to DDR3. According to CompTIA Core 1 (220-1201) memory and hardware objectives, DDR4 was designed as the successor to DDR3 and provides several performance and efficiency improvements.

DDR3 memory typically operates at data transfer rates ranging from 800 MT/s to 2133 MT/s, while DDR4 starts at 2133 MT/s and can scale significantly higher depending on the module and platform. This increased transfer rate allows DDR4 to handle more data per second, improving overall system performance, especially in modern systems and multitasking environments.

Option B is incorrect because DDR4 achieves higher bandwidth, not DDR3. Option C is incorrect because DDR4 operates at a lower voltage (typically 1.2V) compared to DDR3 (typically 1.5V), making DDR4 more power efficient. Option D is also incorrect because DDR4 is better suited for low-power environments due to its reduced voltage requirements.

CompTIA emphasizes understanding RAM generations, including differences in speed, bandwidth, and power consumption, making DDR4’s higher data transfer rates a key distinguishing factor.

Comprehensive and Detailed Explanation From Exact Extract (Aligned With CompTIA A+ 220-1201 Study Guide)

The CompTIA A+ wireless networking section describes key differences between 2.4 GHz and 5 GHz Wi-Fi frequencies.

2.4 GHz provides:

Better range

Better wall penetration

Better performance through structures and obstacles

This means less interference from physical structures, which is the primary advantage of 2.4 GHz over 5 GHz.

This maps directly to:

✔ C. Minimized structural interference

Why the other options are incorrect

A. Communication without external power

Not related to Wi-Fi frequencies.

B. Security for close-proximity connections

No Wi-Fi frequency provides inherent security advantages.

D. Increased channel options

5 GHz has more channels, not 2.4 GHz.

When a laptop powers on but the screen is blank, the quickest way to isolate the problem is to connect to an external monitor. This helps determine if the issue is with the laptop display or with the graphics subsystem.

From CompTIA A+ 220-1101 Official Study Guide, Objective 4.1 – Troubleshoot common hardware problems:

“A blank screen on a laptop with power indicators lit should be tested with an external display first to rule out a faulty screen or ribbon cable.”

Verified Source:

CompTIA A+ Core 1 (220-1101) Official Study Guide, Chapter 4: Laptop Display Troubleshooting

CompTIA Exam Objectives 220-1101, Domain 4.1

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A managed switch provides advanced features such as traffic monitoring and VLAN configuration, allowing a technician to view network statistics for devices on the local subnet.

Why Not B (Router): A router connects different networks and directs traffic between them but does not provide detailed subnet-level statistics.

Why Not C (Access point): Access points provide wireless connectivity but lack traffic monitoring features.

Why Not D (Firewall): A firewall filters traffic but is not used for monitoring detailed statistics on a local subnet.

CompTIA A+ Exam Reference: Core 1 (220-1201), Section 2.6, network monitoring tools​.

Comprehensive and Detailed Step-by-Step Explanation:

S.M.A.R.T. (Self-Monitoring, Analysis, and Reporting Technology):

S.M.A.R.T. is a monitoring system integrated into modern HDDs and SSDs that detects and reports on various indicators of drive health and reliability.

A S.M.A.R.T. error indicates that the drive is showing signs of impending failure, even if the PC continues to boot and work normally for the time being.

Next Steps:

The appropriate action is to replace the hard drive (HDD) because a S.M.A.R.T. error is an early warning of possible hardware failure. Ignoring the warning could result in data loss if the drive fails completely.

The technician should also back up the user ' s data immediately to avoid losing critical information.

Incorrect Options:

B. Update the PC ' s BIOS: While keeping the BIOS updated is a good practice, it does not address the S.M.A.R.T. error, which is specific to the HDD.

C. Close the ticket: Closing the ticket without resolving the issue would be improper, as the S.M.A.R.T. error is a hardware problem that needs to be addressed to prevent future data loss or downtime.

D. Change the NIC: The NIC (Network Interface Card) is unrelated to the storage system and would not resolve a S.M.A.R.T. error.

Key Takeaway:

A S.M.A.R.T. error is a critical indicator of HDD health issues, and the drive should be replaced as soon as possible. Backing up data is also essential.

An older HDMI cable version may not support 4K resolution. For 4K output, both the device and the cable must support HDMI 2.0 or higher.

From CompTIA A+ 220-1101 Official Study Guide, Objective 3.1 – Display troubleshooting:

“Ensure the correct version of HDMI cable is used for high-resolution outputs like 4K. Older cables may be limited to 1080p.”

Verified Source:

CompTIA A+ Core 1 (220-1101) Official Study Guide, Chapter 3: Display and Video

CompTIA Exam Objectives 220-1101, Domain 3.1

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Comprehensive and Detailed Step-by-Step Explanation:

Random BSODs (Blue Screen of Death), intermittent freezing, and degraded performance under load are common symptoms of failing or faulty RAM (Random Access Memory). Here ' s the reasoning:

RAM Module (Correct Answer):

Faulty or failing RAM can cause random BSODs due to memory errors when the system attempts to read or write to corrupted memory locations.

Intermittent freezing, especially under performance-intensive operations, can occur because the CPU relies heavily on RAM for active processing tasks.

Over time, heat generated during usage can exacerbate RAM instability, leading to progressively worse performance throughout the day.

Solution: The technician should run a memory diagnostic tool, such as Windows Memory Diagnostic or MemTest86, to confirm if the RAM is at fault.

Incorrect Options:

A. Video Card: A faulty video card can cause graphical glitches, screen artifacts, or crashes, but it is unlikely to cause system-wide performance degradation and random freezing under normal operations unless the issue is specific to GPU-intensive tasks (e.g., gaming or video rendering).

B. HDD: A failing hard drive can cause system slowdowns and freezing, but it typically produces other symptoms such as read/write errors, boot failures, or clicking sounds. HDD issues do not usually cause BSODs unless critical system files are corrupted.

D. TPM (Trusted Platform Module): A TPM is a hardware-based security module used for encryption and secure authentication. It does not affect performance or cause BSODs or freezing under normal operation.

Key Takeaway:

The symptoms described (random BSODs, intermittent freezing, and degraded performance under load) are most likely caused by faulty or failing RAM. Memory diagnostic tools should be used to confirm the issue.

The default gateway is the network device responsible for routing traffic from a local computer to destinations outside its subnet. When a new firewall is deployed and intended to manage outbound traffic, client devices must be configured to send packets to this firewall. CompTIA A+ identifies the gateway setting as the key parameter that determines where a workstation sends its external-bound traffic.

By updating the gateway address to point to the new firewall’s internal interface, all internet-bound and off-subnet traffic will now pass through the firewall for filtering, inspection, and routing. This ensures correct traffic flow and enforces security policies.

Changing the VPN settings (A) does not affect local traffic routing unless a VPN tunnel is active. Subnet mask adjustments (C) determine the network size but do not control routing. VLAN settings (D) require switch configuration, not workstation changes, and do not dictate default routing behavior.

Thus, modifying the gateway is the correct and necessary step to route all traffic through the newly implemented firewall.

Comprehensive and Detailed Explanation (100–150+ Words):

CompTIA A+ stresses that printers must use static IP addresses to remain consistently reachable on a LAN. When using DHCP, the printer ' s IP address may change, causing laptops to lose access. By assigning a static IP within the same subnet, the printer becomes a stable, discoverable network resource for all laptops.

Using dynamic IPs for the laptops is perfectly acceptable in SOHO environments, because clients don’t require permanent IPs. Assigning public IPs (Option B) is incorrect and unsafe. APIPA (169.254.x.x) does not route and cannot reach the internet or a standard printer. Using dynamic ISP-assigned IPs for all devices (Option D) is also incorrect because ISP routers typically give only one public IP, not multiple internal ones.

Therefore, to ensure the printer is always reachable, the correct configuration is: DHCP for laptops, static IP for printer a best practice detailed in CompTIA’s networking and SOHO setup guidelines.

BitLocker Drive Encryption in Windows requires aTrusted Platform Module (TPM)to encrypt the boot drive securely. The TPM is a dedicated microcontroller designed to secure hardware through integrated cryptographic keys. It validates system integrity during boot and securely stores the encryption keys. If BitLocker cannot find a TPM or it is disabled in BIOS/UEFI, drive encryption cannot proceed.

BitLocker can function without TPM using a USB startup key, but this compromises some security and is not recommended for managed enterprise environments.

Fiber is the best option when the goal is the fastest possible network speeds between nearby locations. In CompTIA A+ Core 1 networking, fiber-optic cabling (single-mode or multimode) provides the highest bandwidth capacity and supports very high data rates over longer distances compared with copper media. Fiber is also highly resistant to electromagnetic interference (EMI) because it transmits data as light rather than electrical signals, which improves reliability and signal quality—especially in environments with motors, fluorescent lighting, or other sources of interference. For nearby locations (such as buildings on the same campus), fiber is commonly used for backbone links and uplinks between switches because it delivers excellent throughput and can scale to higher speeds as equipment is upgraded.

DSL is limited by telephone-line quality and distance from the provider’s equipment, and it is typically much slower than fiber. Satellite has higher latency and is not chosen when maximum speed and low delay are required. Coaxial can support broadband and some high-speed links, but it generally offers less bandwidth, more susceptibility to noise than fiber, and is not the top choice for highest-speed interconnection when fiber is available.

When a newly built computer successfully passes POST, it indicates that the CPU, RAM, motherboard, video output, and other essential components are functioning at a hardware level. POST will typically fail or display error codes if there are problems with the CPU, RAM, GPU, or power delivery. Therefore, the fact that POST succeeds allows us to eliminate those components from suspicion.

The issue arises after POST, when the system attempts to load an operating system. For the OS to load, the BIOS/UEFI must detect a working storage device—such as an HDD, SSD, or NVMe drive—containing a bootable OS. If the computer cannot locate or read the drive, the system will halt at a boot error, such as “No boot device found,” “Insert boot media,” or similar messages. This is consistent with a failed or improperly connected HDD.

A failed HDD prevents access to boot files, even though the rest of the system hardware functions normally. Audio cards are irrelevant to booting. A failed CPU would cause a POST failure, not an OS loading issue. A faulty power supply would affect system stability during POST, not specifically OS boot failure unless the system is not powering at all.

Thus, the failed component is the HDD.

An SSD (Solid-State Drive) is the correct choice because it stores data using flash memory (NAND) and is commonly available in large capacities suitable for operating systems, applications, and mass storage. In CompTIA A+ Core 1 terms, SSDs contain no moving parts, which makes them faster and more reliable than mechanical drives for many workloads. They provide significantly improved read/write performance, lower latency, reduced heat output, and better shock resistance—important for both desktops and especially laptops. SSDs are also widely used in modern systems via SATA or NVMe (PCIe) interfaces, with NVMe offering the highest performance for large data transfers.

The other options do not match “flash memory”: DVD-RW is optical media with limited capacity and slower speeds, intended for removable storage rather than large-volume primary storage. An HDD can store large volumes of data but uses magnetic platters and moving heads, not flash memory. Tape is also magnetic media, typically used for backups and archival storage, and while it can store large amounts, it does not use flash and is designed for sequential access rather than fast random access. Therefore, SSD is the best answer.

Comprehensive and Detailed Explanation (100–150+ words):

Secure printing ensures that print jobs are not immediately output to the tray but instead held in a secure queue. The user must enter a PIN, password, or badge authentication directly at the printer to release the job. CompTIA A+ emphasizes secure printing as the correct method for environments where sensitive information such as HR files, performance reviews, or confidential reports must not be viewed by unauthorized individuals.

Audit logging tracks usage but does not protect documents from being seen on the printer tray. Wired connectivity has no relation to security or confidentiality. Duplex is simply a printing mode.

Secure printing is widely used in corporate environments so shared devices can remain shared without compromising sensitive data. The A+ curriculum describes this as a security control that ensures confidentiality in shared-print environments, making Secure Printing the proper solution.

The workstation ' s IP configuration (192.168.1.27/24 with gateway 192.168.1.1) shows that it has a correct IP address, correct subnet mask, and expected default gateway for a typical small office network. Because the IP is in the correct private range and not an APIPA address (169.254.x.x), this also confirms that DHCP is functioning properly. Therefore, option D (DHCP) cannot be the cause.

The user then pings the default gateway at 192.168.1.1, which should be the router—the device providing routing between local devices and outside networks. The repeated " Request timed out " responses indicate the workstation cannot reach the router at all. This type of failure points directly to a router outage, a powered-off router, a failed router interface, or a physical disconnection of the router from the switch.

If DNS (C) were the issue, the user would still be able to ping the IP address of the gateway because DNS is not required for IP-to-IP connectivity. A web server (A) has no relation to local gateway communication and does not affect workstation access.

Since the workstation has a valid IP but cannot reach its default gateway, the failure point is the router.

The correct answer is B. Inspect and replace the printer rollers .

According to CompTIA A+ Core 1 220-1201 objectives under Printers:

Frequent paper jams with no visible obstruction are often caused by worn or dirty feed rollers , which fail to grip and feed paper properly.

Inspecting and replacing the rollers ensures smooth paper feeding and prevents repeated jams, particularly in high-use network printers.

Why the other options are incorrect:

A. Check for firmware updates: Firmware updates address software or functionality issues, not mechanical paper feeding problems.

C. Reseat the fuser assembly: Fuser issues typically cause smudging or incomplete toner adhesion, not paper jams.

D. Clean the corona wire: The corona wire affects toner adhesion and print quality, not paper feeding.

The correct answer is A. Clean the feed rollers .

According to CompTIA A+ Core 1 220-1201 objectives under Printers:

Frequent paper jams, particularly in high-use shared printers, are commonly caused by dirty or worn feed rollers .

Cleaning the feed rollers removes dust, paper debris, and toner residue that can prevent smooth paper feeding, especially when printing double-sided documents.

This is a standard preventive maintenance procedure that improves reliability and extends the printer’s operational life.

Why the other options are incorrect:

B. Use a different paper weight: A4 standard paper is appropriate; changing paper weight is unnecessary unless the paper is damaged or incompatible.

C. Replace the fuser unit: Fuser problems generally cause smudging or incomplete fusing, not frequent paper jams.

D. Change the toner cartridge: Toner issues affect print quality (light or streaky prints), not paper feeding or jamming.

Comprehensive and Detailed Explanation From Exact Extract (Aligned With CompTIA A+ 220-1201 Study Guide)

CompTIA A+ Core 1 memory standards describe the differences between DDR generations. One of the key improvements in DDR4 over DDR3 is reduced operating voltage, which allows lower power consumption and increased efficiency.

DDR3 operates at 1.5V (some variants 1.35V)

DDR4 operates at 1.2V (some variants 1.05V LPDDR4)

This lower voltage is a recognized defining characteristic separating DDR4 from DDR3.

Other differences such as increased speed and internal bank structure exist, but the question specifically asks for the characteristic that differentiates DDR4 from DDR3 — and voltage is the correct, primary distinction used in CompTIA A+ materials.

Why the other options are incorrect

B. Higher latency

DDR4 generally has slightly higher CAS latency numbers, but due to increased speed, real latency is similar. This is not the standard differentiator referenced by CompTIA.

C. Increased DIMM width

DDR3 and DDR4 standard DIMMs both have a 64-bit data width.

D. Single-sided modules

Both DDR3 and DDR4 can be single- or double-sided; not a differentiating factor.

Final Answer: A

When a printer refuses to use paper that is physically present in the tray, CompTIA A+ identifies tray configuration settings as the most likely cause. Printers require a match between tray settings (paper size, paper type, orientation) and the incoming print job’s specifications. If the tray is incorrectly configured—such as being set to Letter (8.5×11 in) or A4—then the printer will keep prompting for the correct paper even though 11×17 paper is loaded.

The fact that the technician successfully prints the same diagram on another identical printer proves that the driver, print job format, and user permissions are correct. This isolates the issue to the local printer’s configuration. Incorrect drivers (B) would affect printing on both printers. Connectivity issues (C) would prevent printing entirely, not cause paper prompts. Permissions (D) do not affect paper-size recognition.

Therefore, the most likely cause is improper tray settings on the user’s printer.

To ensure a workstation always receives the same IP address while still using DHCP, the correct method is to configure a DHCP reservation. A reservation “combines” two key pieces: the workstation’s MAC address (hardware address) and a specific IP address within the DHCP scope. When the workstation requests an address, the DHCP server matches the request to the stored MAC address and consistently assigns the reserved IP each time the device connects. This provides the benefits of DHCP (central management, consistent options like gateway/DNS, easier changes) while giving the workstation a predictable IP, which is often needed for management, monitoring, or firewall rules.

Creating a new scope is used to define an address pool and options for an entire subnet, but it does not guarantee one device always gets the same IP. NAT translates private IPs to public IPs and is unrelated to consistent DHCP assignments for a specific workstation. APIPA automatic private IP addressing 169.254.x.x occurs when DHCP fails and is not a controlled way to ensure a consistent, usable network address. Therefore, assigning a reservation is the correct answer.

Platform as a Service (PaaS) is designed to host and run applications while the cloud provider manages the underlying infrastructure and operating system. With PaaS, an organization deploys its internal application code (and often configures runtime settings), but does not handle OS installation, patching, hardening, or most server maintenance tasks. This aligns with CompTIA A+ Core 1 cloud concepts that compare service models by responsibility: as you move from IaaS to PaaS to SaaS, the provider manages more of the stack.

IaaS (Infrastructure as a Service) provides virtualized compute, storage, and networking, but the customer still manages the OS, updates, drivers, and the application stack—so it does not meet the “without managing the underlying OS” requirement. SaaS (Software as a Service) delivers a complete finished application to users (like email or CRM), which typically doesn’t fit hosting a custom internal application you develop. UCaaS focuses on communication services (voice, video, messaging) rather than general application hosting. Therefore, PaaS is the best option for hosting an internal application without managing the underlying OS.

When installing copper network cable in spaces that serve as air-handling plenums, safety regulations require the use of plenum-rated cable. Suspended ceilings used for ventilation fall into this category. CompTIA A+ emphasizes that plenum spaces require cable with low-smoke, fire-resistant insulation made from specialized materials that limit toxic emissions during combustion.

Plenum-rated cabling (CMP) is designed to meet strict fire codes such as NFPA 70 (National Electrical Code). It prevents smoke-filled ventilation pathways, which could rapidly spread fire or toxic fumes throughout a building. Standard PVC-jacketed twisted pair cables are not permitted in plenum spaces because they produce thick, toxic smoke when burned.

Multimode cable refers to fiber optics, not copper cabling. Coaxial cable is used for broadband and certain RF applications but does not inherently meet plenum safety requirements unless specifically plenum-rated. Twisted pair describes the cable’s internal structure (Cat5e, Cat6, etc.), but it does not indicate the type of jacket. Only plenum-rated twisted pair is acceptable.

Therefore, the correct answer is Plenum, as it ensures compliance with safety standards and building codes, prevents hazardous conditions, and aligns with CompTIA best practices for structured cabling installations.

If only one print job fails and others succeed, it is often due to a paper type or tray selection mismatch for that specific job. If a print job is configured to use a tray that is empty or set to manual feed, it will not be released until resolved.

From CompTIA A+ 220-1101 Official Study Guide, Objective 4.3 – Printer troubleshooting:

“If a specific print job stalls while others succeed, check the job settings for specific tray or paper type configurations that do not match the printer’s current setup.”

Verified Source:

CompTIA A+ Core 1 (220-1101) Official Study Guide, Chapter 4: Printer Troubleshooting

CompTIA Exam Objectives 220-1101, Domain 4.3

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CompTIA A+ teaches that RAID 6 is the RAID level that uses double parity, allowing the array to survive the failure of two drives simultaneously. RAID 6 stripes data across all disks like RAID 5 but stores two independent sets of parity information, making it far more fault-tolerant.

RAID 0 has no parity and provides only performance. RAID 1 mirrors data but uses no parity. RAID 5 uses single parity and can tolerate only one disk failure. Because the question explicitly asks for double parity, only RAID 6 is correct.

2.4GHz Wi-Fi signals have better penetration through walls and other obstacles compared to 5GHz and 6GHz. Lower frequency waves (like 2.4GHz) travel farther and are less absorbed by physical barriers.

From the CompTIA A+ 220-1101 Official Study Guide, Objective 2.5 – Compare and contrast wireless networking protocols:

“The 2.4GHz frequency band offers greater range and better penetration through walls and obstacles than higher frequencies like 5GHz and 6GHz. Higher frequencies provide faster speeds but are more easily absorbed by walls.”

NFC (Near Field Communication) is not a Wi-Fi technology and works only over very short distances (a few centimeters).

Verified Source:

CompTIA A+ Core 1 (220-1101) Official Study Guide, Chapter 2: Wireless Networking

CompTIA Exam Objectives 220-1101, Domain 2.5

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Channel configuration(e.g.,dual-channel,quad-channel) determines how memory modules communicate with the memory controller. Usingmatched pairs in dual- or quad-channel setupscan significantlyincrease memory bandwidth, improving performance especially for gaming and video-intensive tasks.

Option A (Error correction):ECC RAM is used in servers for reliability, not performance or gaming.

Option B (RAM voltage):Affects compatibility and overclocking but not bandwidth.

Option D (Physical size):Refers to module form factor (e.g., DIMM, SO-DIMM) and does not impact bandwidth.

CompTIA A+ Core 1 Exam Objective Reference:

Objective 3.2: Given a scenario, install RAM types.

Color gamut refers to the range of colors a display can accurately reproduce. For tasks like graphic design or photo editing, ensuring the screen ' s colors match the printed output is critical. Monitors with wide and accurate color gamuts (e.g., Adobe RGB) are preferred for these applications.

Option B (Pixel density): Incorrect. Pixel density affects image sharpness, not color accuracy.

Option C (Refresh rate): Incorrect. Refresh rate impacts motion smoothness but is unrelated to color matching.

Option D (Resolution): Incorrect. Resolution determines clarity and detail but does not influence color accuracy.

The correct answer is WAN (Wide Area Network). According to CompTIA Core 1 (220-1201) networking fundamentals, a WAN is used to connect devices or networks over large geographic areas, typically through an Internet Service Provider (ISP). A WISP (Wireless Internet Service Provider) delivers internet connectivity wirelessly over long distances, which clearly falls under WAN technology.

In this scenario, the technician connects a WISP modem to a portable router to provide Ethernet connectivity to a laptop. The WISP modem represents the WAN link, as it connects the local device to an external network (the internet) managed by the service provider. The portable router then distributes that WAN connection locally via Ethernet.

A SAN (Storage Area Network) is used for high-speed storage communication between servers and storage devices and is unrelated to internet connectivity. A PAN (Personal Area Network) is limited to very short-range connections, such as Bluetooth between personal devices. A MAN (Metropolitan Area Network) covers a city or campus-scale area and is not applicable to a single modem-to-router setup.

CompTIA emphasizes identifying network types based on scope and provider involvement. Since a WISP connection extends beyond the local environment and connects to an ISP, it is classified as a WAN.

Clicking and grinding noises indicate mechanical drive failure.

SMART data provides insights into the health and status of drives, helping identify failing components in the RAID array.

Why Not A (Run a magnet): This would damage drives.

Why Not B (Check if one drive is not level): Physical leveling is irrelevant.

Why Not D (Check OS logs): OS logs may provide limited information for RAID arrays.

Why Not E (Update RAID controller firmware): While important, it does not diagnose drive failure.

CompTIA A+ Exam Reference: Core 1 (220-1201), Section 3.3, storage troubleshooting​.

Inlaser printers, thefuser unitis responsible formelting the toner onto the paperusing heat and pressure. If the toner rubs off easily, it ' s a clear sign thefuser is failing or not heating properly. Replacing the fuser will ensure the toner bonds correctly to the paper.

Option B (Drum):Transfers the image, but doesn ' t fuse the toner.

Option C (Developer roller):Applies toner to the drum wouldn’t cause toner to rub off.

Option D (Discharge lamp):Prepares the drum for a new image; not related to toner adhesion.

CompTIA A+ Core 1 Exam Objective Reference:

Objective 3.7: Given a scenario, troubleshoot common printer problems.

===========

CompTIA A+ details that an Automatic Document Feeder (ADF) allows multi-page documents to be scanned automatically without manually placing each sheet on the flatbed. This drastically increases scanning efficiency for large documents.

Flatbed scanners require manual placement for every page. Duplexing scans both sides of a page but does not feed multiple sheets by itself. Orientation configuration only affects image alignment.

The ADF is explicitly highlighted in the A+ study guide as the primary feature used in business environments when scanning high-volume documents efficiently.

Thus, the ADF is the correct solution because it automates page feeding and dramatically reduces scanning time, especially for hundreds of pages.

Because the printer is a network printer and the issue occurs across multiple computers and different print jobs, the problem is very likely within the printer hardware/consumables, not the PC drivers or a single workstation configuration. Faint printing is a classic symptom of low or depleted toner (or an aging toner cartridge that is no longer distributing toner evenly). In CompTIA A+ troubleshooting methodology, you start with the most probable and simplest cause before performing deeper configuration changes or part-level adjustments. Replacing the toner cartridge is a straightforward first action that often resolves consistent faint output quickly and restores normal print density.

Reinstalling printer drivers would typically be indicated if only one computer had issues or if output problems changed based on driver settings; that is not the case here. Adjusting fuser temperature is not a normal first-line step for faint prints and is usually associated with toner not bonding properly (smearing or flaking), not consistently light output. Calibration can be useful for alignment or color/quality tuning, but it does not usually fix a persistent, uniform faintness caused by insufficient toner. Therefore, replace the toner cartridge first.

Laptop display assemblies typically include not only the LCD panel but also the webcam, microphone, display cable, and critically, the Wi-Fi antennas. In most laptops, Wi-Fi antennas are built into the display bezel, because the elevated position allows for stronger wireless signal reception. When replacing the entire display assembly, the antennas must be carefully disconnected and reconnected during reinstallation.

CompTIA A+ emphasizes proper cable routing and antenna reattachment as essential steps in laptop hardware disassembly and reassembly. Failing to reconnect these antennas results in weak or nonfunctional wireless connectivity, even though the display replacement itself may be successful.

Heat sinks and CPU fans are located on the motherboard and are unrelated to display assembly replacement. Resetting BIOS settings is unnecessary unless troubleshooting firmware-related issues, not replacing hardware components like a display. Therefore, the only action that aligns with standard laptop design and CompTIA A+ procedures is ensuring that the wireless antennas are reconnected.

Thus, the correct answer is B.

Comprehensive and Detailed Step-by-Step Explanation:

When delivering 10Gbps speeds over long distances, fiber optic cables are the best choice. Here’s the breakdown:

A. Multimode Fiber (Correct Answer):

Multimode fiber is designed for relatively short to medium distances (up to 1,312 feet or 400 meters) while supporting high-speed data transfer (10Gbps and above).

It uses LED light sources and is cost-effective for environments like data centers or within buildings.

For the specified distance of over 328ft but under 1,312ft, multimode fiber is the most suitable option.

Incorrect Options:

B. Single-mode Fiber: While single-mode fiber supports much greater distances (up to several miles or kilometers) and higher speeds, it is more expensive and unnecessary for the specified range. Single-mode fiber is generally used for long-haul networking or telecommunications.

C. Cat 6a: Cat 6a is capable of 10Gbps speeds but only up to 328ft (100 meters). It cannot reliably handle the specified distance of over 328ft.

D. Cat 6: Cat 6 is also limited to 10Gbps speeds at distances up to 328ft (100 meters). Beyond this range, it is unsuitable.

Key Takeaway:

For delivering 10Gbps speeds over distances longer than 328ft (100m) but under 1,312ft (400m), Multimode Fiber is the best choice due to its ability to support high-speed data over medium distances at a reasonable cost.

Adegraded RAID 1array usually meansone of the drives has failed or is failing. The correctnext step is torun diagnostics on each driveto identify the faulty one. RAID 1 uses mirroring, so one good drive should still contain all the data.

Option B:chkdsk checks file system integrity, not hardware drive health.

Option C:Rebuilding should only occurafteridentifying and replacing a faulty drive.

Option D:RAID 0 offers no redundancy and would destroy data in this context.

CompTIA A+ Core 1 Exam Objective Reference:

Objective 3.5: Given a scenario, troubleshoot problems related to storage devices.

A proxy server acts as an intermediary between client devices and the internet. One of its primary functions is URL filtering, web-content restriction, and logging user activity. When a user attempts to connect to a website, the request first goes to the proxy, where filtering rules determine whether the site is allowed or blocked. CompTIA A+ 220-1201 emphasizes that proxies help organizations control outbound traffic, enforce browsing policies, block malicious or inappropriate content, and improve security through caching.

Spam gateways only filter email, DHCP assigns IP addresses, and RADIUS handles authentication, none of which enforce website restriction. Therefore, the correct solution for content control is a proxy server, as stated in the Networking domain of the A+ curriculum.

To verify the source of printer misuse, the administrator needs detailed records showing who performed specific actions and when. According to CompTIA Core 1 (220-1201) printer management and security objectives, audit logs provide a historical record of printer activity, including user IDs, timestamps, document names, and print volumes. These logs allow administrators to trace printer usage back to a specific user or device, making them the most effective tool for investigating misuse.

Secure printing requires users to authenticate at the printer before jobs are released, which helps prevent unauthorized access but does not provide historical evidence of past misuse. A print counter tracks the total number of pages printed but does not identify individual users or specific print jobs. User authentication ensures that only authorized users can access the printer, but by itself it does not provide detailed usage tracking unless combined with logging.

CompTIA emphasizes audit logging as a critical component of accountability and security across systems, including printers. When investigating policy violations or misuse, audit logs are the primary source of verifiable evidence.

A smart card provides an additional factor of authentication by storing secure credentials, such as certificates, that cannot be guessed or replicated. It complements user accounts and is " something you have " .

Why Not A (Fingerprint reader): This is " something you are " , but the scenario specifically requires a physical token.

Why Not C (Secure token): Secure tokens are also valid but may not integrate as seamlessly into multi-factor authentication for physical and system access.

Why Not D (NFC scanner): An NFC scanner is a device and not a token itself; it reads cards or other credentials.

CompTIA A+ Exam Reference: Core 2 (220-1102), Section 2.5, access controls​.

Bluetooth audio issues are typically related to distance and signal strength, not internet connectivity or Wi-Fi access points. Bluetooth devices—especially headsets—generally have a limited effective range of around 10 meters (33 feet) for Class 2 Bluetooth, which is common in consumer laptops and headsets. When the user leaves the room and walks into adjacent offices, they are likely moving beyond the optimal Bluetooth range or passing through walls that weaken the signal.

CompTIA A+ highlights that Bluetooth uses low-power radio frequencies easily disrupted by physical obstructions, distance, and interference. Since the laptop remains stationary and the user moves, the headset becomes progressively further from the laptop, causing intermittent audio dropouts, stuttering, or loss of connection.

The number of APs (A) is irrelevant because the headset is not using Wi-Fi. Mesh mode (C) applies only to wireless AP-to-AP communication. The internet connection (D) is high-quality fiber and conference calls work fine when stationary, so the issue is not bandwidth or WAN throughput.

Thus, the most likely cause is that the user is moving in and out of Bluetooth range.

RAID 1, also known as disk mirroring, duplicates data identically to two drives, ensuring full redundancy if one drive fails. Because the workstation only has two drives, RAID 1 is the only RAID level that provides fault tolerance under this constraint, exactly as described in the CompTIA A+ study guide.

RAID 0 offers no redundancy, RAID 5 requires at least three drives, and RAID 10 requires at least four drives.

RAID 1 is the recommended configuration for small environments or workstations that rely on data integrity and quick recovery, matching CompTIA’s guidance for redundancy in systems with limited drive availability.

A private cloud provides cloud resources that are dedicated to a single organization, giving that organization exclusive use of the underlying infrastructure. This model is selected when a company needs tighter control over security, compliance, performance, and customization than what is typically available in a multi-tenant public cloud environment. Private cloud resources can be hosted on-premises in the organization’s own data center or hosted by a third party, but the key point is exclusive access—the hardware and cloud environment are not shared with unrelated customers.

A public cloud is shared among multiple customers (multi-tenant), so it is not exclusive. A hybrid cloud combines two environments, usually a private cloud and a public cloud, which can help with flexibility and scaling, but it is not defined as exclusive because part of it may be public. A community cloud is shared by organizations with common needs (such as similar compliance requirements), meaning it is shared among multiple entities rather than exclusive to one organization. Therefore, the cloud model that provides exclusive access to resources is Private.

Physical damage from dropping a tablet may often affect ports or connectors. Before taking deeper diagnostic or replacement steps, it ' s important to visually inspect the USB-C charging port for damage or debris. If the port is damaged, charging issues can occur regardless of battery health.

CompTIA A+ explains that Wi-Fi issues at the edges of a building are typically caused by weak signal coverage, not client configuration. The recommended solution is to add additional wireless access points (APs) or mesh extenders to expand coverage and eliminate dead zones.

Enabling 5GHz would worsen the problem because 5GHz has shorter range and penetrates walls less effectively than 2.4GHz. Flushing DNS affects name resolution, not wireless signal strength. Upgrading the NIC to Wi-Fi 6 improves maximum throughput but still depends on sufficient signal, which the user does not have.

Additional APs ensure strong signal-to-noise ratio, consistent throughput, and stable roaming all solutions emphasized in the A+ wireless troubleshooting section. Therefore, option D is the correct and CompTIA-aligned fix.

Comprehensive and Detailed Step-by-Step Explanation:

LC Connector (Lucent Connector):

LC is a type of fiber optic connector commonly used in optical networking cables. It is small, compact, and widely used for high-speed data transfer over fiber optic networks.

LC connectors are specifically designed for fiber optic cables, making them the correct answer.

Incorrect Options:

A. RJ45: RJ45 connectors are used for Ethernet cables (twisted-pair copper cabling) and are not compatible with optical networking cables.

C. USB-C: USB-C is a connector type used for general-purpose data transfer, charging, and video output, not for optical networking.

D. Lightning: Lightning connectors are proprietary to Apple devices and are not used in optical networking.

Key Takeaway:

The LC connector is specifically designed for fiber optic cables, making it the correct answer for optical networking.

Comprehensive and Detailed Explanation (From CompTIA A+ 220-1201 Concepts):

A consistent Wi-Fi SSID across all APs allows users to roam throughout the office while maintaining access to local resources without reconnecting manually.

CompTIA Core 1 Study Guide Concept Reference:

Wireless networking configuration

SSID broadcast and roaming

WLAN infrastructure

The study guide explains that a common SSID enables seamless roaming and uninterrupted access to network resources.

The correct answer is B. NVMe SSD .

According to CompTIA A+ Core 1 220-1201 objectives under Hardware and Storage:

NVMe (Non-Volatile Memory Express) SSDs provide the fastest data access and retrieval speeds compared to other storage types, especially on laptops. NVMe SSDs use the PCIe interface, which allows significantly higher throughput and lower latency than SATA-based storage.

This improves boot times, application load times, and overall system responsiveness.

Why the other options are incorrect:

A. SATA M.2: While faster than traditional 2.5” SSDs and HDDs, SATA M.2 is limited by the SATA III interface (~600 MB/s), which is slower than NVMe SSDs (~3,000–7,000 MB/s).

C. Optical disk: Optical media (CD/DVD/Blu-ray) is extremely slow and not suitable for quick access or retrieval.

D. 7,200rpm HDD: Mechanical hard drives have the slowest access times and throughput compared to SSDs.

Packet loss

Plug an Ethernet cable into the workstation

A screenshot of a computer AI-generated content may be incorrect.

The correct answer is A. RJ11 .

According to CompTIA A+ Core 1 220-1201 objectives under Networking:

RJ11 connectors are commonly used for telephone lines and data cables that use two pairs of wires (four wires total).

This connector is standard for analog telephone connections and DSL connections.

Why the other options are incorrect:

B. F-type: Used for coaxial cables, commonly in cable TV or broadband internet, not for two-pair data cables.

C. ST: A type of fiber optic connector, not used for copper two-pair wiring.

D. Molex: Primarily used for power connections in computer hardware, not for network or phone cabling.

The best answer provided is A , although it is important to note that the question is somewhat misleading because it asks about motherboard selection but provides mostly incorrect or irrelevant motherboard-related options.

For high-performance workloads such as video editing and virtual reality (VR) using an Intel Core i9 processor and multiple graphics cards (multi-GPU setup) , system design considerations include high power consumption and significant heat output. In the CompTIA A+ Core 1 220-1201 objectives under hardware planning and troubleshooting, high-performance CPUs and multiple GPUs require adequate thermal management solutions , including advanced cooling systems (air or liquid cooling) to ensure system stability and prevent thermal throttling.

Why A is the best answer:

High-end CPUs like Intel Core i9 and multiple GPUs generate substantial heat.

Proper cooling is essential for maintaining performance under sustained load (video rendering, VR workloads).

While not strictly a motherboard feature, cooling is a critical system requirement for such a build.

Why the other options are incorrect:

B. Use DDR3 RAM for increased compatibility

Incorrect because modern Intel Core i9 platforms use DDR4 or DDR5 , not DDR3, which is obsolete and incompatible with current high-performance motherboards.

C. Verify there are two PCIe x1 slots for additional devices

Incorrect because PCIe x1 slots are used for low-bandwidth devices (sound cards, network cards), not graphics cards.

Multiple GPUs require PCIe x16 slots , not x1.

D. Select a motherboard with integrated graphics to support video output

Incorrect because high-performance systems with discrete GPUs rely on those GPUs for rendering. Integrated graphics are unnecessary and sometimes disabled when a dedicated GPU is installed.

Exam Insight (CompTIA A+ perspective):

In real-world A+ Core 1 scenarios, the correct motherboard selection for this requirement would focus on:

Multiple PCIe x16 slots (for multi-GPU support)

Compatible socket for Intel Core i9

Support for modern RAM (DDR4/DDR5)

Adequate chipset and power delivery (VRM design)

Proper cooling solution for thermal management

However, since those correct motherboard specifications are not provided in the options, A is the only viable system-level requirement relevant to stability under high-performance load .

Wall Outlet

(empty — nothing goes directly to the wall)

Surge Protector (Power Source: Wall Outlet)

Printer

Scanner

UPS (Power Source: Surge Protector)

Computer

Monitor

Cable Modem

Wi-Fi Router

The correct answer is D. RAID 10 (also called RAID 1+0).

According to CompTIA A+ Core 1 220-1201 objectives under Storage:

RAID 10 combines the mirroring of RAID 1 with the striping of RAID 0. This provides both high data availability (because each drive has a mirror) and improved performance (because data is striped across multiple disks).

RAID 10 requires a minimum of four drives and is suitable for servers that handle high I/O workloads while maintaining redundancy.

Why the other options are incorrect:

A. RAID 1: Provides mirroring for redundancy but does not improve performance as effectively as RAID 10.

B. RAID 0: Provides striping for performance but has no redundancy; a single drive failure results in data loss.

C. RAID 5: Provides parity and can tolerate one drive failure with decent read performance, but write performance is lower than RAID 10 and rebuilds can impact system performance under heavy load.

In CompTIA A+ Core 1 (220-1201) networking and troubleshooting, a common cause of “can’t reach internal resources” while docked is that the laptop is still using the wireless interface (or has a higher interface priority for Wi-Fi) instead of the docking station’s wired Ethernet connection. If the Wi-Fi network is a guest/isolated VLAN, uses different routing, or has stricter access controls, the user may be blocked from reaching department file servers even though an Ethernet cable is physically connected to the dock. Disabling Wi-Fi is a fast, low-risk step that forces the system to use the wired NIC path through the docking station, which typically provides the correct corporate network access, DHCP scope, and routing to internal servers.

Restarting the computer might help in some cases, but it’s less targeted and not the “best next step” when the likely issue is interface selection. Replacing the Ethernet cable is appropriate if link lights are off or the wired connection is clearly down, but the scenario highlights that the dock has a hardwired connection—suggesting the physical layer may be fine. Dock firmware updates are not a first-line fix for basic connectivity/access symptoms.

The correct answers are E. NFC and F. Location services .

According to CompTIA A+ Core 1 220-1201 objectives under Mobile Devices and Security:

NFC (Near-Field Communication) : Enables the device to communicate with contactless payment terminals, which is essential for detecting nearby stores that accept contactless payments.

Location services : Allows the application to determine the user’s geographic location so it can provide notifications only when the user is near a participating store.

Why the other options are incorrect:

A. MDM (Mobile Device Management): Manages device policies but does not enable location-based notifications or contactless payments.

B. Contact syncing: Synchronizes contacts; unrelated to payment notifications.

C. Bluetooth: Can be used for some proximity services, but NFC is required for contactless payment detection.

D. Hotspot: Provides internet access; not required for proximity detection in this context.

For the highest possible stability, the best power-supply choice is a redundant power supply. In CompTIA A+ Core 1 (220-1201) hardware concepts, redundant PSUs are used in systems where uptime and reliability are critical. A redundant PSU configuration typically includes two power supply units operating together (often in a hot-swappable bay). If one PSU fails, the other continues supplying power, allowing the workstation to remain operational and preventing unexpected shutdowns that could interrupt CAD work or corrupt data. This directly matches the requirement for maximum stability.

A UPS improves resilience to power loss and brownouts by providing battery backup and line conditioning, but it is not a power supply type and doesn’t protect against the PSU itself failing. A surge protector helps guard against voltage spikes, but it also does not ensure system operation if the PSU fails. A modular PSU mainly improves cable management and airflow by allowing detachable cables; it can be convenient and neat, but it does not inherently increase stability compared with redundancy. Therefore, the most stability-focused PSU option is Redundant.

In the CompTIA A+ Core 1 (220-1201) networking concepts, satellite internet is commonly associated with higher (increased) latency compared with terrestrial options like cable, fiber, or DSL. Latency is the delay between sending data and receiving a response. With satellite, signals must travel from the user’s dish up to a satellite and then back down to a ground station (and return again for responses). That long travel distance adds noticeable delay, which can affect real-time activities such as VoIP, video conferencing, and online gaming. Even though newer low-earth-orbit (LEO) systems can reduce latency compared with older geostationary systems, satellite service is still generally discussed in A+ as having higher latency characteristics to consider.

The other options do not best fit satellite internet. Proximity to urban infrastructure (A) is more relevant to cable/fiber availability. An eSIM requirement (B) relates to cellular/mobile service, not satellite broadband. Line of sight to a nearby tower (C) describes cellular or fixed wireless services that depend on tower connectivity; satellite instead needs a clear view of the sky toward the satellite (not a nearby tower). Therefore, increased latency is the best characteristic to consider.

The correct answer is B. Change the fuser temperature .

According to CompTIA A+ Core 1 220-1201 objectives under Printers:

A laser printer fuses toner onto paper using heat and pressure. Thicker paper often requires a higher fuser temperature to properly adhere the toner.

If the output smudges on thick paper but prints fine on standard paper, adjusting the fuser temperature is the first step before performing more invasive maintenance or replacing parts.

Why the other options are incorrect:

A. Install a maintenance kit: Typically includes rollers, belts, and other parts; this is not the first action if the issue is temperature-related.

C. Clean the transfer roller: Cleaning may improve print quality, but smudging on thick paper usually relates to insufficient fusing heat.

D. Install an OEM toner cartridge: The issue is unlikely to be caused by non-OEM toner if standard paper prints correctly.

The correct answer is A. Loopback plug .

According to CompTIA A+ Core 1 220-1201 objectives under Networking:

A loopback plug is used to test a network interface card (NIC) port by sending a signal out of the port and back into the same port, verifying that the NIC can send and receive data properly .

This is a common diagnostic tool when troubleshooting network connectivity issues on individual devices.

Why the other options are incorrect:

B. Toner probe: Used for tracing and locating cables, not for testing NIC ports.

C. Cable tester: Checks the integrity of network cables but does not verify NIC send/receive functionality.

D. Network tap: Passively monitors network traffic but does not test the NIC port itself.

According to the CompTIA A+ Core 1 (220-1201) virtualization objectives, a Type 1 hypervisor is known as a bare-metal hypervisor because it installs directly onto the physical hardware of a system rather than running on top of a traditional operating system. This architecture allows the hypervisor to manage hardware resources—such as CPU, memory, storage, and networking—without the overhead of a host operating system. Because of this direct interaction with the hardware, Type 1 hypervisors typically provide higher performance, better scalability, and improved stability compared to Type 2 hypervisors.

Examples of Type 1 hypervisors include VMware ESXi, Microsoft Hyper-V (bare-metal deployment), and Citrix XenServer. These hypervisors are commonly used in enterprise data centers, cloud infrastructure, and large virtualization environments where multiple virtual machines must run efficiently on a single physical server. ???? ️

Option A (Host OS required) describes a Type 2 hypervisor, such as VMware Workstation or Oracle VirtualBox, which runs on top of an existing operating system. Option C (Lightweight OS) may describe some hypervisor environments but is not the defining characteristic. Option D (Local configuration options) is also not specific to Type 1 hypervisors.

Therefore, the key characteristic that defines a Type 1 hypervisor is that it performs a bare-metal server installation directly on the hardware

The correct answer is D. SMTP (Simple Mail Transfer Protocol) .

According to CompTIA A+ Core 1 220-1201 objectives under Networking:

SMTP is the standard protocol used to send emails from a client to a mail server or between servers.

POP3 (Post Office Protocol 3) and IMAP (Internet Message Access Protocol) are used for receiving emails , not sending them.

LDAP (Lightweight Directory Access Protocol) is used for accessing and managing directory services, such as authentication and organizational information, not for email transport.

The correct answer is C. DHCP (Dynamic Host Configuration Protocol) .

According to CompTIA A+ Core 1 220-1201 objectives under Networking:

DHCP is used to automatically assign IP addresses and related network configuration (such as subnet mask, default gateway, and DNS servers) to devices on a network.

This eliminates the need for manually configuring IP addresses on each PC and helps prevent conflicts.

Why the other options are incorrect:

A. VLAN (Virtual Local Area Network): VLANs segment a network into logical subnets but do not assign IP addresses.

B. DNS (Domain Name System): DNS translates domain names to IP addresses; it does not assign IP addresses to devices.

D. TCP (Transmission Control Protocol): TCP is a transport layer protocol used for reliable communication between devices, not for IP assignment.

The correct answer is A. Liquid cooling .

High CPU utilization and intensive graphics workloads generate significant heat. According to CompTIA A+ Core 1 220-1201 hardware objectives, ensuring proper thermal management is crucial for system stability and performance.

Liquid cooling provides more efficient heat dissipation than standard air cooling, allowing CPUs and GPUs to maintain optimal performance under heavy load and preventing thermal throttling. This is especially beneficial in gaming, video editing, rendering, or scientific computation workloads.

Why the other options are incorrect:

B. Advanced RISC : Refers to a type of processor architecture optimized for efficiency and specific instruction sets but does not directly address heat or cooling in high-utilization systems.

C. x86 processor : This is a general processor architecture; while important, it does not mitigate heat or improve cooling under heavy CPU/GPU usage.

D. Hardware security module : Focused on cryptographic operations and secure key storage, unrelated to CPU or GPU thermal management.

Looking at the network configurations and outputs from both PCs and servers, here are the possible issues and solutions:

1. PC 1

Issue: The IP address for PC1 is 192.168.1.1, which conflicts with Server 1 (which also uses 192.168.1.1).

Solution: Change the IP address on PC1 to a unique one within the range, like 192.168.1.3.

2. PC 2

Issue: PC 2 is configured with 192.168.1.2, which conflicts with Server 2 that has the same IP address.

Solution: Update the IP address on PC 2 to something unique, like 192.168.1.4.

3. Server 1

Issue: The IP address for Server 1 is 192.168.1.1, which conflicts with PC1.

Solution: Since Server 1 and PC1 are using the same IP address, change one of them. For Server 1, you could change the IP address to 192.168.1.5.

4. Server 2

Issue: Server 2 is using the IP address 192.168.1.2, which conflicts with PC2.

Solution: Update Server 2 to use a different IP address, such as 192.168.1.6.

General Remediation:

The primary problem here is overlapping IP addresses, leading to connectivity issues. Each device on the network must have a unique IP address. After making these changes, ensure that all devices can communicate properly by testing the connection between devices and verifying they can access shared resources.

The correct answer is D. Check for loose connections on the display .

According to CompTIA A+ Core 1 220-1201 objectives under Hardware and Display Troubleshooting:

Flickering or strange colored lines on a monitor are often caused by loose or damaged video cable connections (internal or external).

Before considering costly or time-consuming solutions like replacement, the technician should verify that the display cable, internal ribbon cables, or connectors are properly seated.

Why the other options are incorrect:

A. Suggest a secondary monitor: Provides a temporary workaround but does not resolve the underlying hardware issue.

B. Conduct a factory reset: Resets software settings but will not correct physical connection problems that cause flickering or colored lines.

C. Install a screen protector: Does not affect video signal or display functionality; irrelevant for flickering issues.

A VLAN (Virtual Local Area Network) is the correct solution because it logically separates devices into different broadcast domains on the same physical switching infrastructure. In CompTIA A+ Core 1 (220-1201), VLANs are described as a way to segment a network for security, performance, and management—for example, isolating departments like Accounting and Customer Service so their traffic is separated. Devices assigned to different VLANs cannot communicate directly at Layer 2; communication between VLANs requires a Layer 3 device (such as a router or a Layer 3 switch) using inter-VLAN routing and appropriate access control. This effectively prevents unnecessary broadcast traffic from crossing department boundaries and helps enforce separation policies.

A VPN is used to create an encrypted tunnel over an untrusted network (commonly for remote access or site-to-site connectivity), not for internal departmental segmentation. DNS resolves hostnames to IP addresses and does not isolate networks. DHCP automatically assigns IP configuration (IP address, gateway, DNS servers), but it does not provide segmentation by itself. Therefore, implementing VLANs is the best way to separate the two departments’ networks.

The correct answer is D. Replace the drive with a cold-swappable drive .

According to CompTIA A+ Core 1 220-1201 objectives under Storage and RAID:

RAID 5 provides both data striping and parity for fault tolerance, but if the RAID controller does not support hot swapping, replacing a failed drive while the system is running is not possible.

Cold-swappable drives are designed to be safely removed and replaced when the system is powered down, which allows maintenance without damaging the array or system.

Why the other options are incorrect:

A. Update the RAID controller firmware to support hot swapping: Firmware updates may add hot swap functionality, but this is not guaranteed and may require a system reboot.

B. Implement a software-based RAID solution: Software RAID requires a system reconfiguration and downtime; it does not immediately resolve the degraded RAID 5 array.

C. Change the drive during off-peak hours: While feasible, this is essentially the same as using a cold-swappable drive but is less precise; using cold-swappable drives ensures safe replacement without downtime considerations.

The correct answer is B. Elasticity .

According to CompTIA A+ Core 1 220-1201 objectives under Networking and Cloud Concepts:

Elasticity refers to the cloud computing capability to automatically allocate and deallocate resources based on current demand. This ensures that applications have the necessary compute, storage, and network capacity during peak loads, and resources can be scaled down when demand decreases, optimizing efficiency and cost.

Why the other options are incorrect:

A. Hybrid deployment: Refers to using a combination of public and private clouds; it does not describe dynamic resource allocation.

C. Multitenancy: Describes the architecture where multiple users share the same infrastructure securely.

D. Metered utilization: Refers to charging based on resource consumption; it is a billing mechanism, not a dynamic allocation feature.

The correct answer is C. Firewall .

According to the CompTIA A+ Core 1 220-1201 objectives under Networking and Security:

ACL (Access Control List) capabilities allow a device to control the flow of network traffic based on defined rules, such as permitting or denying traffic from specific IP addresses, ports, or protocols.

Firewalls —whether hardware or software—use ACLs to enforce security policies, filtering inbound and outbound traffic to protect networks and devices.

Why the other options are incorrect:

A. PoE injector: Provides power over Ethernet but has no traffic filtering or ACL functionality.

B. DSL: Refers to a type of broadband connection; it does not provide ACLs.

D. Unmanaged switch: Passively forwards traffic without configuration capabilities, so it cannot implement ACLs.

solution as

A screenshot of a network settings AI-generated content may be incorrect.

A screenshot of a computer AI-generated content may be incorrect.

A screenshot of a computer AI-generated content may be incorrect.

To ensure seamless connectivity during (and after) migrating an application server, the best DNS approach in CompTIA A+ Core 1 (220-1201) terms is to use a CNAME (Canonical Name) record, which creates an alias from one hostname to another. Instead of users connecting directly to a server’s changing hostname, they connect to a consistent service name (for example, app.company.com). That name can be configured as a CNAME pointing to the current host (such as server1.company.com). When the application is moved to a new server, the technician updates what the alias ultimately resolves to (or updates the target host’s A/AAAA record), and clients continue using the same familiar application URL/name—minimizing disruption and avoiding the need to reconfigure endpoints across devices.

The other record types are not designed for this purpose. TXT records store text-based information (often verification or policy data). SPF and DKIM are email authentication-related mechanisms (typically implemented via TXT records) used to validate authorized mail senders and message integrity—not application server migration. Because the goal is maintaining a stable name for a service while the underlying host changes, CNAME is the correct record type.

The correct answer is D. Decreased burn-in .

According to CompTIA A+ Core 1 220-1201 objectives under Hardware and Display Technologies:

Mini-LED displays use an array of tiny LEDs as a backlight for LCD panels.

Unlike OLED displays , which are susceptible to burn-in (permanent image retention when static content is displayed for long periods), mini-LEDs reduce the risk because the pixels themselves do not emit light individually and are less prone to permanent image retention.

Why the other options are incorrect:

A. Increased contrast: OLED typically provides better contrast because it can turn off individual pixels completely.

B. No backlight: Mini-LEDs still use a backlight, whereas OLEDs do not.

C. Improved viewing angle: OLEDs generally offer wider viewing angles than mini-LED LCDs.

The correct answer is D. DVI (Digital Visual Interface) .

According to CompTIA A+ Core 1 220-1201 objectives under Hardware and Display Technologies:

DVI is primarily a video-only interface that transmits digital or analog video signals from a source (like a computer) to a display.

Unlike HDMI or USB-C, DVI does not carry audio signals , making it strictly for video.

Why the other options are incorrect:

A. DisplayPort: Supports video and audio as well as other features such as daisy-chaining multiple monitors.

B. HDMI: Transmits both video and audio signals over a single cable.

C. USB-C: Can carry data, power, and video/audio signals depending on the device and protocol (e.g., DisplayPort Alt Mode).

The correct answer is A. The internal antenna has been damaged .

According to the CompTIA A+ Core 1 220-1201 objectives under Mobile Devices and Networking:

Many laptop Wi-Fi antennas are embedded in the display panel and connected via small cables to the wireless card on the motherboard.

If the display panel is replaced and the Wi-Fi antenna is disconnected, damaged, or improperly routed, the laptop will experience weak or intermittent Wi-Fi connectivity.

Why the other options are incorrect:

B. Airplane mode is enabled: Would completely disable wireless radios; the question specifies difficulty staying connected, not a total lack of connectivity.

C. The inverter is not connected: The inverter powers the backlight of the display, unrelated to wireless connectivity.

D. The wireless drivers have not been updated: While outdated drivers can cause connectivity issues, a sudden problem after a display replacement strongly points to physical antenna damage.

The correct answer is B. USB .

In the CompTIA A+ Core 1 (220-1201) objectives under mobile devices and connectivity methods , tethering refers to sharing a mobile device’s internet connection with another device such as a laptop. There are several tethering methods, including USB tethering, Bluetooth tethering, and Wi-Fi hotspot .

USB tethering is considered the most stable and reliable (tethered) connection because:

It uses a physical cable connection , eliminating wireless interference.

It provides consistent bandwidth and low latency .

It also charges the phone while connected , which is an added benefit.

It is less prone to disconnections compared to wireless methods.

Why the other options are incorrect:

A. Bluetooth

Bluetooth tethering is slower and less stable due to limited bandwidth and susceptibility to interference. It is not ideal for high-performance or stable connections.

C. Hotspot

A mobile hotspot uses Wi-Fi, which is wireless , not tethered. While convenient, it is less stable than a wired USB connection and can be affected by interference and signal range.

D. NFC

NFC (Near Field Communication) is used for very short-range communication like payments or quick pairing. It is not used for maintaining a continuous network connection.

Final Answer: B. USB

An uninterruptible power supply (UPS) protects systems against power outages by providing temporary backup power, giving users time to save data and safely shut down.

From CompTIA A+ 220-1101 Official Study Guide, Objective 3.3 – Power protection:

“A UPS supplies backup power to prevent data loss and hardware damage during outages or surges, ensuring system integrity.”

Verified Source:

CompTIA A+ Core 1 (220-1101) Official Study Guide, Chapter 3: Power Protection

CompTIA Exam Objectives 220-1101, Domain 3.3

Satellite internet is commonly used in rural or remote locations where wired broadband options such as cable and fiber are not available and where DSL service may be limited by distance from the provider’s equipment. CompTIA A+ Core 1 emphasizes understanding internet connection types and where each is typically deployed. Satellite works by using a dish at the customer site to communicate with a satellite, which then relays traffic to a ground station connected to the internet backbone. Because it does not depend on local cable plant, telephone central office proximity, or neighborhood fiber buildouts, it can be deployed in areas with minimal infrastructure.

Fiber (A) provides very high speeds and low latency but requires extensive physical infrastructure that is often lacking in rural regions. Cable (D) also requires a local cable network buildout and is usually concentrated in more populated areas. DSL (C) uses existing telephone lines, but performance and availability depend heavily on distance from the DSL provider’s equipment, making it unreliable or unavailable in sparsely populated regions. While satellite often involves higher latency and can be affected by weather, it remains a primary option when traditional broadband services are not present.

Clock frequency is one of the most significant factors influencing a computer system’s processing performance. According to CompTIA Core 1 (220-1201) CPU and performance objectives, clock speed—measured in gigahertz (GHz)—determines how many instruction cycles a processor can perform per second.

Higher clock frequencies generally result in faster execution of instructions, leading to improved performance in both single-threaded and multi-threaded workloads. While modern CPUs also rely on core count, cache size, and architecture efficiency, clock frequency remains a primary metric for evaluating raw processing speed.

An integrated GPU affects graphics performance rather than overall CPU processing capability. Power connectors ensure proper electrical delivery but do not directly improve processing performance. The voltage regulator module (VRM) stabilizes and regulates power supplied to the CPU but does not itself increase processing speed.

CompTIA expects candidates to recognize clock frequency as a key determinant of CPU performance when upgrading or comparing processors.

Comprehensive and Detailed Explanation

CompTIA troubleshooting procedures emphasize confirming input source settings on the external display device.

Even if the HDMI cable is connected properly:

The projector must be set to the correct input source (HDMI 1, HDMI 2, etc.).

If the source is incorrect, the laptop will not display, even though the laptop output is functioning normally.

Since the projector is powered on, and the laptop is already set to “Duplicate,” and cables are good, the most likely cause is:

✔ The projector is set to the wrong input source.

This is a common real-world issue covered under " video and projector troubleshooting. "

Why the other answers are incorrect

A. Projector may support HDMI; this is not the “most likely.”

B. “Extend” is not required — “Duplicate” works for projectors.

C. A failed HDMI port is possible but not the most likely scenario.

Final Answer: D

A PoE injector is used to add power to an Ethernet cable, enabling the cable to deliver both power and data. This is crucial when connecting to PoE-enabled devices like IP cameras or wireless access points that are far from power outlets.

To allow multiple users to print to networked printers:

Printer shares enable users to access printers shared on the network.

Print servers manage print jobs and provide centralized control of printing.

Why Not B (DHCP server): DHCP is unrelated to print management.

Why Not D (Printer subnet): Subnets group devices but don’t manage printing.

Why Not E (SMB configuration): SMB is for file sharing, not specifically print management.

Why Not F (Printer Wi-Fi settings): These settings are irrelevant since the printers use Ethernet.

CompTIA A+ Exam Reference: Core 2 (220-1102), Section 4.6, printer configuration​.

The digitizer is the component responsible for detecting touch input on a screen. If touch is not registering and there ' s no physical damage, the digitizer may be faulty.

From CompTIA A+ 220-1101 Official Study Guide, Objective 3.1 – Mobile device hardware:

“If a touchscreen device does not respond to input and the screen is intact, the digitizer (touch sensor) may be defective.”

Verified Source:

CompTIA A+ Core 1 (220-1101) Official Study Guide, Chapter 3: Mobile Hardware

CompTIA Exam Objectives 220-1101, Domain 3.1

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When running network cable through a drop ceiling, the space above the ceiling is often used as part of the building’s air circulation system (an air return). In these plenum spaces, building and fire safety standards require cable jackets that produce less smoke and fewer toxic fumes if exposed to heat or fire. Plenum-rated cable is manufactured with a special fire-resistant jacket designed for these environments, making it the correct choice for safe and compliant cabling runs in ceilings and other air-handling areas. This is a key CompTIA A+ Core 1 concept: selecting the proper cable rating based on where the cable is installed to reduce safety hazards and meet code requirements.

The other options do not match the requirement. BNC is a connector type commonly associated with older coaxial networking and certain video applications, not a cable rating for ceiling installations. Coaxial is a cable type used for cable internet and some video signals, but the question is specifically about the required type for a drop ceiling environment, which is about the jacket rating. Fiber-optic is used for high-speed backbone links and long distances, but the question is focused on safety/installation requirements in a ceiling space. Therefore, plenum is the best answer.

The correct answer is D. Replace the failed drive .

RAID 6 is a redundant array of independent disks that can tolerate up to two drive failures while still maintaining data integrity. According to CompTIA A+ Core 1 (220-1201) objectives, a red LED on a drive in a RAID array indicates that the drive has failed or is in a critical state.

Next Step: In RAID 6, a single failed drive should be replaced immediately to prevent additional failures and maintain redundancy. The array can continue to operate in a degraded state, but performance may be slow during rebuilds. Replacing the failed drive allows the RAID controller to rebuild data onto the new drive, restoring full redundancy.

Why the other options are incorrect:

A. Reconfigure the RAID array: This would erase existing data; unnecessary if only one drive failed.

B. Run a S.M.A.R.T. test: While useful for diagnosing drive health, the red LED already indicates failure, so immediate replacement is required.

C. Reinstall the controller drivers: This does not address a physically failed drive and would not fix the degraded RAID array.

The correct answer is B. Switches connect devices within a network; routers connect networks.

According to the CompTIA A+ Core 1 220-1201 networking objectives:

Switches operate at the Data Link layer (Layer 2) and sometimes Layer 3, connecting multiple devices within the same local area network (LAN). They manage data traffic between devices by using MAC addresses to forward frames only to the intended recipient.

Routers operate at the Network layer (Layer 3) and connect different networks together, such as connecting a LAN to the internet. They use IP addresses to determine the best path for forwarding packets between networks.

Why the other options are incorrect:

A. Routers are programmable; switches are not programmable: Both devices can have programmable configurations in enterprise environments, so this is not a defining difference.

C. Switches are programmable; routers are not programmable: Same reasoning as above; not accurate.

D. Routers connect devices within a network; switches connect networks: This reverses the actual roles and is incorrect.

The correct answer is A. NFC (Near Field Communication) .

According to the CompTIA A+ Core 1 220-1201 objectives under Mobile Devices, NFC is commonly used for short-range wireless communication between devices. In the context of mobile printing:

NFC-enabled printers allow a user to tap a mobile device (phone or tablet) to the printer to initiate a print job instantly without needing to configure Wi-Fi credentials or use cables.

This is particularly common in mobile-friendly environments like offices or public kiosks.

Why the other options are incorrect:

B. Hotspot : Provides an Internet connection, not a direct mobile-to-printer interface.

C. Infrared : Legacy technology largely replaced by NFC and Wi-Fi; rarely used in modern printers.

D. USB : Requires a wired connection, not suitable for sending a print job wirelessly from a mobile device.

The correct answer is D. Channel width .

According to CompTIA A+ Core 1 220-1201 objectives under Networking and Wireless:

Channel width refers to the size of the frequency band used for Wi-Fi communication.

Increasing channel width (e.g., from 20 MHz to 40 MHz, 80 MHz, or 160 MHz) allows more data to be transmitted at once, effectively increasing wireless throughput speed.

Why the other options are incorrect:

A. Licensed bands: Licensed spectrum is used for certain types of communication and does not directly increase Wi-Fi throughput.

B. Maximum transmission unit (MTU): MTU defines the largest packet size transmitted over a network but is not the primary factor for increasing Wi-Fi throughput.

C. Transmit power: Adjusting transmit power affects signal range and coverage but does not significantly increase throughput; it may improve connectivity but not data rates.

When a printout is being cut off, CompTIA A+ Core 1 (220-1201) troubleshooting emphasizes checking the simplest, most likely configuration mismatch first—the printer’s paper size/source settings. Even if the user physically loaded the correct paper, the print job can still be formatted incorrectly if the printer driver, application, or printer itself is set to use a different paper size or a different tray. If the printer thinks it is using a smaller paper size (or a tray configured for smaller paper), it may clip the printable area and truncate the image at the edges.

Changing tray settings (paper size and paper source) aligns the printer’s configuration with the actual media installed, which is a standard first-step for issues related to formatting, clipping, and page boundaries. Image quality (DPI) affects sharpness, not cropping. File type rarely causes consistent edge cutoff compared with page setup mismatches. Adjusting image size could work as a workaround, but CompTIA best practice is to correct the paper/tray and page setup settings first so all prints format properly without editing the document each time.

The correct answer is B. Reconnect the wireless antennas .

According to CompTIA A+ Core 1 220-1201 objectives under Hardware and Laptop Maintenance:

Many laptop wireless antennas are routed through the display assembly to provide optimal Wi-Fi and Bluetooth signal strength.

When replacing a laptop display, it is essential to disconnect and then reconnect the wireless antennas to ensure proper connectivity.

Failing to reconnect these antennas can result in weak or no wireless signal.

Why the other options are incorrect:

A. Reattach the heat sinks: Heat sinks are part of the CPU/GPU cooling assembly and are unrelated to replacing the display.

C. Install a new CPU fan: CPU fans are part of the cooling system, not the display assembly.

D. Reset the BIOS to default settings: Not required for physically replacing the display; the BIOS retains settings independently of display hardware.

A screenshot of a computer AI-generated content may be incorrect.

The correct answer is B. Near-field communication (NFC) .

According to the CompTIA A+ Core 1 220-1201 objectives under Mobile Devices and Security:

NFC is commonly used for secure access control. Many organizations implement NFC-enabled ID badges or mobile devices to unlock doors, gates, or secure areas.

The mobile device communicates over a very short range (a few centimeters) with a reader to authenticate the user.

Why the other options are incorrect:

A. Hotspot: Provides internet access, not physical building access.

C. Infrared scanner: While used in some legacy devices, it is not commonly implemented for secure mobile access.

D. Geolocation: Can provide location awareness but does not grant direct access to secure physical spaces.

The correct answer is D. Verify the audio output assignment .

According to CompTIA A+ Core 1 220-1201 objectives under Hardware and Troubleshooting:

HDMI carries both video and audio signals . If video displays correctly but audio is not heard, it is often because the computer is still outputting sound to its internal speakers rather than the HDMI-connected device.

The user should check the audio output settings in the operating system and ensure the HDMI device (TV or projector) is selected as the audio output device.

Why the other options are incorrect:

A. Adjust the volume settings: Volumes are already at 50%, so adjusting them will not solve the problem if the audio output is assigned incorrectly.

B. Swap the HDMI cable: The video is working fine, so the cable is likely functional.

C. Reinsert the HDMI cable: Unlikely to resolve audio assignment issues if the connection is already working for video.

The correct answer is D. Data is being throttled .

Data throttling refers to the intentional slowing down of internet speeds by a mobile carrier after a user reaches a certain data usage limit or during network congestion. In this scenario, the employee can still successfully upload files, but the speed has decreased compared to before—this is a classic symptom of throttling.

Why the other options are incorrect:

A. Wireless is turned off

If wireless were turned off, the employee would not be able to upload anything at all. The question clearly states that uploads are still successful.

B. 5G is disabled

Disabling 5G could reduce speeds slightly if the device falls back to 4G/LTE, but it would not typically cause a significant or noticeable degradation unless compared under ideal conditions. It is not the most likely cause.

C. Roaming is turned on

Roaming allows connectivity outside the home network. While it may incur additional charges, it does not inherently cause significant speed reduction in most modern networks. It is less likely than throttling.

Exam Tip (Core 1 220-1201):

Slow but working connection → Think throttling or congestion

No connection → Think disabled wireless or network issues

Final Answer: D. Data is being throttled

The correct answer is B. Header pinouts .

According to CompTIA A+ Core 1 220-1201 objectives under Hardware:

Header pinouts on a motherboard are designated connectors for internal components such as USB ports, audio connectors, and front panel buttons/LEDs.

When adding additional internal USB ports, a technician typically connects them to the motherboard’s USB header pinouts. These headers provide the necessary data and power connections to enable USB functionality for front-panel or expansion USB ports.

Why the other options are incorrect:

A. TPM (Trusted Platform Module): Used for hardware-based security functions like encryption, not USB connectivity.

C. M.2 connector: Used primarily for SSDs and other small-form-factor expansion devices, not standard USB ports.

D. Expansion slots: Typically PCIe or PCI slots are used for expansion cards such as GPUs, network cards, or USB controller cards, but not for connecting internal USB headers directly.

The correct answer is A. Duplex .

In the CompTIA A+ Core 1 (220-1201) exam objectives under printer settings and configuration , duplex printing refers to printing on both sides of the paper automatically.

Using duplex printing is the best way to reduce resource consumption because:

It cuts paper usage in half , which is the primary resource being conserved.

It is ideal for multi-page documents and multiple copies .

It reduces physical storage and handling requirements.

Why the other options are incorrect:

B. Orientation

Orientation (portrait or landscape) changes the layout of the document but does not reduce resource usage .

C. Tray settings

Tray settings determine which paper tray is used (e.g., plain paper, letterhead), but they do not impact resource consumption.

D. Quality

Print quality (draft, normal, high) may affect ink/toner usage , but it does not reduce paper consumption as effectively as duplex printing, which is the main resource concern in this scenario.

Final Answer: A. Duplex

A router is a network device that forwards data between different networks by examining packet headers, specifically the IP address information contained in Layer 3 (Network Layer) of the OSI model. According to the CompTIA A+ Core 1 (220-1201) networking objectives, routers use routing tables and packet header analysis to determine the best path for data to travel from a source network to a destination network. When a packet arrives at a router interface, the router reads the destination IP address in the packet header, compares it against its routing table, and then forwards the packet to the appropriate next hop or network interface. This function allows routers to connect multiple networks such as LANs, WANs, and the internet.

The other options do not perform this function. A hub operates at Layer 1 (Physical Layer) and simply broadcasts incoming signals to all connected ports without inspecting any packet information. A repeater also operates at the physical layer and is used only to regenerate or amplify signals to extend network distance. An unmanaged switch operates mainly at Layer 2 (Data Link Layer) and forwards frames based on MAC addresses, not IP packet headers. Because only routers analyze packet headers and forward traffic between different networks, Router is the correct answer.

The correct answer is A. Virtual LAN (VLAN) .

According to CompTIA A+ Core 1 220-1201 objectives under Networking:

VLANs are used to segment a physical network into multiple logical networks. By assigning the accounting department to a separate VLAN, users on other VLANs cannot access its network traffic without routing, thereby isolating sensitive departments while using the same physical switch.

VLANs improve security, reduce broadcast traffic, and allow network administrators to enforce access controls at the layer 2 level.

Why the other options are incorrect:

B. DHCP reservations: Ensure that specific devices always receive the same IP address, but do not restrict network access.

C. Content filtering: Controls web or application traffic based on content, not segmenting network access between departments.

D. Port security: Limits which devices can connect to a port but does not provide full network segmentation for an entire department.

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The degraded status on Server 2 indicates a RAID-5 issue, typically due to a failed or failing drive. In RAID-5 configurations, when one drive fails, the system can still operate but with reduced performance as parity data is used to rebuild missing data on-the-fly.

Recommended Replacement Drive:

To minimize performance degradation, the replacement drive should be:

SAS HDD with the same specifications (64KB stripe size, no read-ahead, and write-back policy).

Matching the configuration exactly ensures seamless integration and optimizes recovery speed in the RAID-5 array.

In RAID-5, degraded performance is expected when one drive fails, as parity data needs to rebuild missing information during each read/write process. Replacing the failed drive restores the RAID array to optimal status, reducing the load on existing drives and returning the system to normal read/write performance. The write-back policy and disabled disk cache settings are designed to reduce latency and increase efficiency, essential for handling real-time applications.

A user reports poor performance on the

application server.

INSTRUCTIONS

Click on Server 1 and Server 2 and review

the information presented in each chart to

determine which drives need to be replaced.

Select the appropriate replacement drive

that should be used, for the least

performance degradation to the server.

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The correct answer is A. Adjust the SMTP server configurations for email .

Scan-to-email functionality on a multifunction printer relies on proper configuration of an SMTP (Simple Mail Transfer Protocol) server . The printer must know how to send outgoing email, which requires settings such as:

SMTP server address

Port number (commonly 25, 465, or 587)

Authentication credentials (username/password)

Encryption method (SSL/TLS if required)

If scan-to-email is not working, the most common cause is incorrect or missing SMTP configuration. Without this setup, the printer cannot send scanned documents via email.

Why the other options are incorrect:

B. Check the printer ' s IP address configuration

This ensures network connectivity, but since the printer is already in use and the issue is specific to email functionality, IP configuration is unlikely the root cause.

C. Install the printer ' s driver software on all computers

Drivers are needed for printing from computers, but scan-to-email is handled directly by the printer and does not depend on client-side drivers.

D. Configure user authentication settings for email access

While authentication may be required in some setups, it is part of the broader SMTP configuration. The primary and most direct fix is ensuring SMTP settings are correct.

Exam Tip (Core 1 220-1201):

Scan-to-email issues → Check SMTP settings first

Multifunction printers rely on network services (email protocols) , not just drivers

Final Answer: A. Adjust the SMTP server configurations for email

The correct answer is A. Better compatibility .

According to CompTIA A+ Core 1 220-1201 objectives under Software Troubleshooting and Virtualization:

Application virtualization allows applications to run in an isolated environment on a client device without being installed directly on the operating system.

This improves compatibility , as applications can operate regardless of OS differences, avoiding conflicts with other installed applications or system configurations.

Why the other options are incorrect:

B. Reduced network latency: Application virtualization does not inherently reduce network latency; network performance depends on connectivity.

C. Secure telnet access: Telnet is unrelated to application virtualization.

D. Metered utilization: Metering refers to cloud service usage or billing, not a benefit of application virtualization itself.

The correct answer is D. Injector .

Power over Ethernet (PoE) allows network cables to carry electrical power to devices such as wireless access points, IP cameras, and VoIP phones, eliminating the need for separate power supplies. According to the CompTIA A+ Core 1 220-1201 objectives under Networking, PoE can be implemented in the following ways:

PoE-enabled switches : Switches that can supply power directly over the Ethernet ports.

PoE injectors : Devices that add power to an existing Ethernet connection when the switch or router does not provide PoE.

Why the other options are incorrect:

A. Modem : A modem connects a network to the Internet but does not provide PoE functionality.

B. Range extender : Extends the range of a wireless network; does not supply power over Ethernet.

C. Media converter : Converts one type of network media to another (e.g., fiber to copper) but does not implement PoE.

Therefore, when a switch does not natively provide PoE, a PoE injector is the standard solution to add power to the Ethernet line.

The correct answer is B. VGA .

VGA (Video Graphics Array) is an analog video interface . It transmits video signals as continuous electrical waves, which means the signal can degrade over distance or due to interference. VGA uses a 15-pin connector and is considered legacy hardware in modern systems, but it is still important for CompTIA A+ because you may encounter it in older equipment.

Why the other options are incorrect:

A. DVI

DVI can support both digital and analog signals , but in most modern contexts and exam questions, it is primarily treated as a digital interface (especially DVI-D). Since the question asks for a clearly analog cable, VGA is the best answer.

C. USB-C

USB-C is a digital interface that can carry video signals using protocols like DisplayPort Alternate Mode. It does not transmit analog video.

D. HDMI

HDMI is a fully digital interface used for high-definition video and audio transmission. It does not support analog signals.

Exam Tip (Core 1 220-1201):

Analog video = VGA

Digital video = HDMI, DisplayPort, USB-C, most DVI types

Final Answer: B. VGA

Check the exhibit diagram for both parts.

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Part 2

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The correct answer is B. Moving to a supported system under a Type 2 hypervisor .

In the CompTIA A+ Core 1 (220-1201) objectives, virtualization is a key concept for maintaining compatibility with legacy systems. A Type 2 hypervisor (hosted hypervisor) runs on top of an existing operating system and allows users to run a virtual machine (VM) with an older OS.

This solution is ideal because:

It allows the legacy application to run in its required OS environment .

It avoids replacing the application (which could cause data loss or compatibility issues ).

It is cost-effective , as it uses existing hardware.

It minimizes user disruption , since users can continue using the application within a VM.

Why the other options are incorrect:

A. Setting up a bare-metal hypervisor

A Type 1 (bare-metal) hypervisor is more complex, costly, and disruptive. It typically requires dedicating hardware and is not ideal for a single department use case.

C. Upgrading to an alternative product and importing the data

Although this may be a long-term solution, it involves higher cost, potential data loss, retraining, and disruption .

D. Uploading the database to a private cloud

This does not solve the compatibility issue of the legacy application with the new OS.

Final Answer: B. Moving to a supported system under a Type 2 hypervisor

The correct answer is D. Router .

According to the CompTIA A+ Core 1 (220-1201) objectives for Networking, routers are devices that operate at Layer 3 (Network layer) and are primarily used to connect multiple networks, including LANs, WANs, and the Internet. Routers use IP addressing to determine the best path for forwarding packets between networks.

Why the other options are incorrect:

A. Controller : Generally refers to a device that manages a network or hardware component but does not inherently connect different networks.

B. Bridge : Connects two segments of the same network, not different networks, and operates at Layer 2 (Data Link layer).

C. Hub : Connects devices within the same network segment, simply repeating signals, and does not perform routing between networks.

The correct answer is B. Replacing the fans .

According to CompTIA A+ Core 1 220-1201 objectives under Hardware and Troubleshooting:

A computer that gradually slows down and then shuts down without warning is often experiencing overheating .

Overheating can occur when cooling fans fail or dust accumulates, preventing proper airflow. Replacing or cleaning fans restores cooling and prevents thermal shutdowns.

Why the other options are incorrect:

A. Upgrading the memory: Would improve system performance if there is insufficient RAM but does not prevent thermal shutdowns caused by overheating.

C. Adding drive space: Helps with storage capacity but does not affect CPU/GPU heat or thermal shutdown.

D. Swapping the power supply: Would address power delivery issues, but the scenario describes gradual slowdown before shutdown, which is characteristic of thermal issues rather than immediate power failure.

Answer of both steps below.

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The correct answer is C. ECC (Error-Correcting Code) .

In the CompTIA A+ Core 1 (220-1201) hardware objectives, RAM types and features include technologies designed to improve reliability and data integrity.

ECC memory is specifically designed to detect and correct data errors (faults) in memory automatically. It uses additional bits to store error-checking information, allowing the system to:

Detect single-bit and some multi-bit errors

Automatically correct errors without system interruption

Improve system stability, especially in servers and critical systems

This makes ECC the best choice for recovering from data faults .

Why the other options are incorrect:

A. Capacity

Capacity refers to how much data the RAM can hold (e.g., 8GB, 16GB). It has nothing to do with error detection or correction.

B. Speed

Speed (measured in MHz or MT/s) affects performance but does not provide any fault recovery capability.

D. DDR

DDR (Double Data Rate) refers to the generation/type of RAM (e.g., DDR3, DDR4, DDR5). It improves performance but does not handle errors.

E. Parity

Parity memory can detect errors but cannot correct them . Since the question specifically asks for recovery from faults, ECC is the correct answer because it both detects and corrects errors.

Final Answer: C. ECC