The electromagnetic spectrum of visible light lies in the ___________ frequency range of the spectrum.
A common mode (CM) signal can be converted to a differential mode (DM) signal as a result of a(n):
Where backbone cabling exceeds cabling lengths for the same performance or design (for product used in horizontal cabling), there are three fundamental tests which should be considered when testing. They are:
You are preparing to test newly installed open office cabling. Within the open office cabling, there are multiple consolidation points (CP) that were installed while waiting for furniture. How do you proceed with permanent link testing?
Which of the following covers lightning protection systems and defines as exposed anything above ground and outside the zone of protection?
Which type of cable tray is best described as a ventilated bottom with side rails?
The standard floor space coverage area for each building automation system (BAS) is a BAS outlet or device for every ________ of floor space.
An existing ceiling raceway system has 115,000 sq mm (177 sq in) of cross-sectional area available for distribution of cable runs. How many can be served by the existing system?
What is the testing frequency of a Category 6/Class E cable?
What is the insertion loss guideline for a multimode mechanical splice?
There are three buildings approximately 400 meters apart and the customer wants to use 10 Gig Ethernet. What fiber should be specified for this application?
What is the expected lumenance value, in watts, of a 200 watt fluorescent lamp after three years?
Within a heating ventilation and air conditioning automatic control system, what do the letters DDC stand for?
Within a commercial office building of 2300 sq m (25000 sq ft), how many building automation system (BAS) devices are required?
It is important to keep all underfloor cabling systems very neat and orderly. Cabling systems must be managed to ensure that air flow is not impeded by the height or volume of underfloor cabling. Keeping copper communications cabling properly separated from is one design approach. To resolve this:
You are designing a cabling containment system installed overhead in a new data center. The main or prime purpose of the system will be to manage fiber optic cabling between cabinets. You have a choice of designs of the containment system. In view of the prime purpose of containment system, your first choice of design will be one that:
What type of redundancy provides two complete units, modules, paths or systems for every one required for a base system.
What is the MINIMUM clearance needed between the front of the telephone booth and any wall or fixture for most installations?
A pay telephone using coins needs to be installed in a public area. In the specifications, it is required that the telephone shall meet the ADA (Americans with Disability Act) requirement for side reach using a wheelchair. What will be the maximum reachable height or the value of "X"?
A pay telephone using coins needs to be installed in a public area. In the specifications, it is required that the telephone shall meet the ADA (American with Disabilities Act) requirement for front reach using a wheelchair. What will be the maximum reachable height or the value of "X"?
Which of the following is NOT provided by the ac grounding electrode system?
The recommended MAXIMUM value for the bonding resistance between the nearest available grounding electrode and the busbar in an entrance facility (EF) is ________ ohms.
What is the MINIMUM ceiling height of a telecommunications room?
In a telecommunication room (TR), the ________ is the facility used to make cross connections from the backbone cable to the horizontal cable.
Which of the following types of conduit uses set screw couplings and connectors?
Which of the following is NOT true about consolidation points?
Which of the following is NOT a type of connector for optical fiber?
A furniture cluster with 26 requires a MINIMUM of how many multiuser telecommunications outlet assembly (MUTOA)?
Aerial entrances to small buildings should be limited to ________ cable pair or less.
Which one of the following is NOT an advantage of direct-buried cable?
The information technology system (ITS) designer should design conduits entering a building from below grade point to extend ________ above finished floor (AFF).
Color codes for cross-connection fields have been used for many years. Which color is used to identify network connections?
Which class of the system applies when the premise only has a single equipment room (ER), and it is the only telecommunications space administered?
In an industry where a high level of humidity is measured, which type of label should be used?
The average power consumption in a telecommunications room (TR) is 2260 watts per hour. What is the heat dissipation in BTUs?
The formula for calculating BTUs from electrical power is:
You are designing a large equipment room (ER) that will house many servers, switches, backup storage drives, and other communications equipment including peripheral devices. To prevent problems from harmonic currents that can be created by switching power supplies, you should arrange for:
What is the appropriate impedance of coaxial cable for use with broadband distribution?
The following diagram indicates what type of CATV distribution system?
A building has a series of CATV outlets each with cables installed back to a telecommunications room (TR), and each telecommunications room (TR) is connected to the headend. What is this type of topology called?
You are designing the cabling infrastructure for a lab office building that will frequently change tenants. The owner will be responsible for all of the infrastructure that feeds each floor to include the telecommunication rooms. Which firestop method will best suit the owners needs?
Most types of firestop putty have ________ properties.
A(n) ________ system is considered a mechanical firestop.
Geographically speaking, a __________ covers an area associated with an individual's work space.
You have just assumed management responsibility over an older network consisting of passive hubs and some layer 2 switches. The network is experiencing massive slow downs on an irregular basis. Which of the following is the MOST effective immediate solution to the problem?
IPv-4 addresses are ________ bits in length.
Premises optical fiber links should be tested:
A security program consists of three independent components. They are electronic, architectural, and:
You have been asked to project manage a fiber cable backbone installation. In the course of the installation, you notice the fiber cable with a 25 mm (1 in) outside diameter is being installed into a small TR, and the cable is being installed into a tight corner. Based on your knowledge of minimum bend radius requirements for fiber cable, you must ensure that the MINIMUM cable bend radius of _______________ is provided when the cable installation is completed.
Which of the following statements best describes what a backbone distribution system typically provides?
The decision regarding the number of optical fibers to install (fiber strand count) in a backbone depends largely on all of the following EXCEPT: