VNX301 Sample Questions Answers

The correct answers are B and C . During a migration from a legacy WAN, such as MPLS Layer 3 VPN, to Versa Secure SD-WAN, an SD-WAN gateway is used to allow communication between SD-WAN-enabled branches and legacy WAN sites. Versa SD-WAN design guidance states that an SD-WAN gateway allows sites connected to the SD-WAN VPN network to communicate with sites connected to a legacy MPLS VPN network. It also explains that this gateway facilitates route exchange between the MPLS underlay network and the SD-WAN VPN network, typically using a dynamic routing protocol such as BGP.

For this design, the hub or gateway must be configured with the Gateway option for the underlay transport so it can act as the interconnect point between the legacy and SD-WAN domains. Versa documentation further describes configuring a BGP peering session on the MPLS transport VR of the gateway to exchange routes from the MPLS provider to the SD-WAN network, and notes that Director Workflows can automate this configuration. Spoke-to-Spoke-Direct is not sufficient for legacy interconnect, and SD-WAN traffic steering policies do not advertise routes.

The correct answer is B . The DoS profile in the exhibit is a Classified Profile using Source IP Only as the classification key. For TCP flood protection, the profile is enabled and shows an Alarm Rate of 5000 packets per second , an Activate Rate of 7000 packets per second , a Maximum Rate of 100000 packets per second , a Drop Period of 300 seconds , and an action of Random . This means the first threshold, 5000 pps, is used to trigger alarm behavior, while the second threshold, 7000 pps, activates the configured mitigation action. Since the selected action is Random , packets are randomly dropped when the TCP rate reaches the activate threshold.

Versa documentation shows that DoS policies can match traffic using source, destination, service, application, schedule, IP version, DSCP, and other conditions, and that a DoS policy can set either an aggregate or classified DoS profile. It also documents that DoS policies support enforcement actions and logging through LEF profiles for DoS events. Therefore, 7000 pps does not merely generate an alarm, and it does not mean complete dropping. Complete dropping is not selected in the exhibit.

The correct answers are A, B, and E . Versa Director supports multiple notification and event-publishing mechanisms. For email-style system and alarm notifications, Versa Director supports SMTP configuration. The Director documentation lists Configure SMTP Notifications and explains that email templates require SMTP notifications to send test emails or operational messages.

Versa Director also supports webhook notifications. The Director GUI overview states that Notification Configuration includes webhook-based notifications for alarms, and the Director documentation includes a dedicated workflow for configuring webhook notifications for alarms.

Kafka is also a supported event-notification method. Versa’s Kafka Notifications documentation states that Versa Director can publish event notifications to an Apache Kafka server when events occur on a Director node or a VOS device. It also lists notification topics for device events, Director events, Director task notifications, and object-change event notifications.

MMS is not a Versa Director system event notification method. SMS can be configured for text messaging in some notification contexts, but for the three methods listed for system event notifications in this answer set, the verified options are SMTP, Webhook, and Kafka.

The correct answers are A and C . Versa supports upgrading deployed VOS branch devices either directly on the VOS appliance or centrally through Versa Director. The Director-based method is performed from the Administration > Appliances area: Versa documentation says to select one or more Controller nodes or VOS devices, click the Upgrade Selected Appliances icon, choose the software image package, and proceed with the appliance upgrade. The same upgrade procedure is referenced for remaining VOS branch devices, including the option to upgrade branches individually or all at once.

A CLI-based upgrade using a software .bin package is also a valid operational method when the image is copied to the device and installed locally, particularly for controlled or recovery-style maintenance. Option B is not the best answer for already deployed branch upgrades because the Preferred Software Version field applies to zero-touch provisioning; Versa states that during ZTP, Director upgrades a branch to the preferred version if applicable. That setting influences onboarding behavior, not the normal upgrade workflow for already deployed branches. Option D is incorrect because System > Director Upgrade is used to upgrade the Versa Director node itself, not VOS branch appliances.

The correct answer is A . Versa data-path troubleshooting documentation gives a specific VSM control-plane workflow for checking SD-WAN tunnel objects. After connecting to the VSM daemon, administrators can use show vsm p2mp local-tunnel-sites 0 to inspect local site objects. To check whether remote site objects were learned from BGP or from configuration , Versa instructs administrators to issue show vsm p2mp tunnel-remote-endpoint tenant < tenant-id > on the VSM control plane.

This command is highly relevant when local WAN interfaces are operational, but overlay tunnel formation is incomplete. It shows remote endpoints such as Controllers, hubs, or branches, along with site type, site name, branch ID, tenant ID, remote WAN link information, and tunnel state-related fields.

show interfaces brief confirms interface state and IP addresses, but it does not show learned remote SD-WAN endpoint objects. CGNAT summary is unrelated to tunnel endpoint learning. System storage is useful for disk checks, but not for SD-WAN overlay endpoint troubleshooting.

The correct answer is A . Versa documentation for internet speed tests states that before running an internet speed test, administrators must verify WAN internet connectivity and verify that CGNAT is configured on the provider organization. It also states that administrators should verify that they can retrieve the list of predeployed internet speed-test servers. If an error occurs while fetching the server list, the documentation instructs administrators to check the CGNAT and DNS configurations and then click Fetch Server List again.

This aligns with the scenario because DNS resolution and internet breakout depend on correct DNS reachability, NAT translation, and routing through the internet-facing transport. Even if DNS appears partially functional, CGNAT misconfiguration can still prevent application or HTTP test traffic from completing properly.

OSPF, BGP MED, SNMP, syslog, VRRP, and DHCP may be important in other designs, but they are not the first items Versa identifies for a failed internet speed-test server-list fetch in a DIA context.

The correct answers are B and D . In the exhibit, the Next-Hop Selection Method is configured as Load Balance , and both INET and INET-2 have the same next-hop priority value of 1 . Versa SD-WAN guidance states that load balancing between WAN paths is achieved by configuring at least two circuits with equal priority. Therefore, when both INET and INET-2 satisfy the SLA requirements, sessions can be load-balanced across those two internet circuits.

Option D is also correct because the exhibit shows SLA Violation Action: Forward . This means that if no next hop is SLA-compliant, the VOS device is still allowed to forward traffic instead of dropping it. This behavior is consistent with Versa SD-WAN traffic-steering concepts, where forwarding profiles define circuit or path priorities, connection methods, load-balancing behavior, and SLA handling for traffic that matches an SD-WAN policy.

Option A is incorrect because the exhibit does not use the Automatic next-hop selection method. Versa’s performance-based SaaS optimization uses monitoring metrics to select the best path when configured for automatic/performance-based selection, but this exhibit shows Load Balance instead. Option C is not the best answer because LTE has lower priority 2 and would be considered only after the higher-priority INET and INET-2 paths are unavailable or unusable, not merely when one INET circuit fails.

The correct answers are A, B, and D . For large-scale Versa Secure SD-WAN onboarding, common configuration is reusable through templates and grouping. A device template , also known as a post-staging template, provides the common base configuration that is applied to multiple VOS branch appliances. Versa documentation repeatedly shows configuration tasks being performed under Templates > Device Templates , where an organization is selected and the post-staging template is opened in Appliance view for common configuration.

A device group is also shared by multiple appliances because it groups devices that should receive the same template associations and common service behavior. This is the proper way to profile many branches with similar deployment requirements. Service templates are also shared objects. They are used to apply service-specific configurations, such as SD-WAN traffic steering, application steering, QoS, security, or other common services, across devices. Versa SD-WAN design documentation explains that application-steering templates automate business-intent policies and simplify management by combining application classification, forwarding-class mapping, and SD-WAN policy logic in a reusable template.

A workflow device is device-specific, and device bind data contains site-specific values such as interface addressing, gateways, VLANs, and other per-branch parameters. Therefore, those are not the shared configuration objects.

The exhibit shows the Add CGNAT Pool configuration with the IP Address/Range option selected. The configured address range is named Visitors , with a low address of 192.168.10.100 and a high address of 192.168.10.150 . In CGNAT, this pool defines the translated source address resource used by matching NAT rules; it does not define the original inside source hosts. Therefore, matching sessions will have their source address translated to an address from this configured pool range, which makes option C correct. Versa’s CGNAT configuration examples show that a rule matches original source and destination prefixes, and then attaches a translated source pool to perform NAT.

The correct answers are A and D . Versa stateful firewall service includes classic firewall functions that track sessions and enforce traffic policy, and it can work with DoS policy enforcement. Versa’s CLI guide includes Configuring DoS policies under the security configuration area, where DoS rules can match on source, destination, services, applications, URL category, IP version, DSCP, TTL, EtherType, and other packet or session attributes, and can then apply aggregate or classified DoS profiles. This validates DoS protection as a stateful firewall/security service capability.

Application-Level Gateways, or ALGs , are also associated with stateful firewall/NAT behavior because they inspect and assist protocol handling for applications that embed addressing or dynamic port information inside the payload or control channel. This is part of traditional stateful firewall service behavior rather than UTM content inspection.

The correct answer is A . Versa branch troubleshooting documentation states that the provider organization should have MP-BGP configured for SD-WAN deployments so that notifications for all relevant branch events are delivered to the Versa Director node. This is significant during onboarding because branch lifecycle events, such as branch-connect and branch-disconnect, help Director determine where the branch is in the staging process and whether the next configuration push should occur.

MP-BGP does not replace IKE or IPsec. The branch still establishes IKE/IPsec to the staging server or Controller depending on the staging phase. MP-BGP also has nothing to do with URL filtering category updates. While BGP can be used in LAN or WAN routing designs, the specific issue described here concerns provider-organization SD-WAN control-plane event delivery.

Therefore, if branch lifecycle events are not appearing properly, validating provider-organization MP-BGP configuration is part of the correct troubleshooting workflow, especially in addition to checking data-path and IPsec connectivity.

The correct answer is A . In Versa SD-WAN application steering, SaaS or cloud-path selection can use monitoring and DNS-based behavior to determine the best path for an application. For real-time applications such as voice, session stability is often more important than aggressively moving active flows after every path-score change. Session pinning to DNS path is the forwarding-profile behavior that keeps a session associated with the path selected when the DNS/application path decision was made.

This matters because voice and collaboration applications can be sensitive to path changes, packet reordering, and jitter. Pinning prevents active sessions from being unnecessarily moved mid-flow as SaaS monitoring scores change, while still allowing new sessions to take advantage of newer path decisions.

Packet striping is used to distribute packets across multiple circuits and can create reordering concerns for some applications. Symmetric forwarding controls reverse-path behavior rather than DNS-based session stability. Random packet drop is a DoS mitigation action, not a SaaS path-selection feature. Therefore, the best answer is Session pinning to DNS path.

The correct answer is A . Versa monitoring documentation states that when an administrator selects a provider organization in Director and opens the Summary tab, the screen displays several panes. The Asset Inventory pane displays the number of tenants, SD-WAN branches, SD-WAN Controller nodes, vCPEs, SD-WAN hubs, uCPEs, Director nodes, and Analytics nodes in the organization.

This pane is useful for quickly validating the managed estate and confirming whether expected infrastructure objects exist under the provider organization. It also provides a Details button to display asset information in tabular format, which can help during audits or operational checks.

Package Information shows software package details for the selected node, not organization-wide inventory. Uptime shows how long a node and its software have been running. High Availability shows Director HA information. These panes are useful, but they do not provide the organization-level asset count requested in the question.

The correct answer is C . In Versa Secure SD-WAN, Direct Internet Access, or DIA, provides local internet breakout from the branch rather than backhauling internet-bound traffic through a hub. Versa design documentation explains that the DIA architecture creates an internal connection between the tenant VRF and the WAN transport VR and uses CGNAT to translate internet-bound LAN traffic to the public IP address associated with the WAN transport interface. It specifically states that the main DIA components include the CGNAT function for translating internet-bound traffic and that DIA is configured using Director Workflows when configuring tunnels.

When the workflow template is used and the DIA option is selected for the internet breakout tunnel, Director automatically builds the required DIA infrastructure, including the NAPT/CGNAT configuration associated with the internet-facing transport network. This is why manual creation of the CGNAT pool and rule is not required in the workflow-based method. Option A describes a manual configuration approach, not the workflow-generated behavior. Option B is incorrect because NAT must be associated with the internet-facing breakout path, not simply the LAN interface. Option D is incorrect because DIA normally requires address translation for LAN users accessing the public internet.

The correct answer is A . Versa CGNAT troubleshooting documentation includes per-pool and resource counters that show allocation behavior and failures. The counters include values such as bindings allocated, bindings freed, allocation failures, out-of-address errors, and out-of-ports errors. It also shows that CGNAT source-port resources are divided and distributed to worker threads by Versa RFD/RFM, and that allocated source-port ranges can be viewed using show rfm table src-port allocated.

If out-of-ports errors increase while out-of-address errors remain zero, the pool still has usable translated IP addresses, but the available port resource for NAT bindings is exhausted. This commonly occurs when too many concurrent sessions share a limited public IP or source-port range. The corrective action would be to expand the NAT resource, add more public translated IPs, adjust port allocation, or reduce excessive session usage.

A missing NAT IP pool would more likely produce out-of-address problems. A wrong zone match might prevent translation entirely, and OSPF in the LAN VR is unrelated to CGNAT port-resource exhaustion.