The concept of the "security quandary" is based on providing a balancing act between what two elements?
A security program consists of three independent components. They are electronic, architectural, and:
In addition to voice and data services, an equipment room (ER) can be designed to include all of the following EXCEPT:
On a survey of one of your client's buildings, you discover that one of the TRs, housing a considerable quantity of switching equipment, is at 25 degrees C (77 degrees F) with a relative humidity of 59 percent. This is considered to be:
When allocating termination space for CAT 6 and optical fiber cables, it is recommended that additional space of up to ________ percent be considered for the routing of the cables and patch cords.
Active video converters are required for what type of CATV distribution system?
An active video converter is used in what type of CATV cable distribution system?
The headend has several modulators assigning frequencies for distribution to the CATV network. What distribution device should you use immediately at the headend to distribute the modulator's output signals to CATV system?
Which characteristic is an advantage of copper based media over optical fiber cable?
Time division multiplexing (TDM) systems are designed to transport ________ between end point systems.
Composite conductors, although not generally recommended, may be used in special circumstances because they provide all of the following advantages EXCEPT:
You have discovered a common mode current on the metallic cable sheaths of your building riser cables. What is the MOST likely cause for you to investigate?
A common mode (CM) signal can be converted to a differential mode (DM) signal as a result of a(n):
What is the recommended MINIMUM separation of unshielded twisted-pair (UTP) cables from fluorescent light fixtures?
Based on documentation contained within the Insulated Cable Engineers Association (ICEA) standard P32-382, Short Circuit Characteristics of Insulated Cable, a copper conductor is capable of safely carrying one ampere for ________ second(s) for every 42.25 circular mils.
The MINIMUM dimensions of the telecommunications main grounding busbar is ________ and variable in length.
Which device supplies the radio signal into a DAS (distributive antenna system)?
You are designing a 4.9 GHz microwave system that is using rectangular waveguide from the transceiver to the inside wall of the shelter and an antenna that is to be placed 200 ft up on a 250 ft tower. What type of medium will be best suited to connect the antenna to the transceiver?
The propagation and path loss of radio signals in the target environment can be sampled using:
When balanced twisted-pair copper cabling, return loss is a measurement of the:
You have been asked to test and troubleshoot an installed base of cabling that is believed to be causing network problems. You are finding that there are high levels of return loss upon initial testing. What testing will best determine the reasons for these failures?
What type of optical fiber is used primarily for outside plant (OSP) applications?
You must extend a video systems backbone coax cable that was recently installed. Which of the following coaxial cable types would provide the best performance for both analog and digital video?
The RJ-45 is now known as the 8P8C style connector, per the Telecommunications Industry Association (TIA) standard. What does the P and C stand for?
The MAXIMUM span length for an aerial entrance, from the last pole to the building, must NOT exceed:
BICSI recommends that any trench ________ or more deep must be shored to prevent cave in.
Buildings larger than ________ must contain a dedicated room for the termination of entrance facilities.
To accommodate telephone, data, CATV, security and multimedia, a MINIMUM of ________ strands of optical fiber auxiliary disconnect outlet (ADO) cable should be provided.
You have just finished a design calling for 15 telecommunications outlets. You received word that the owner has increased his requirements by 40%. What size commercial DD (distribution device) is required to accommodate the increase?
You are designing a horizontal distribution system that will have a zone box located 71.6 m (235 ft) away from the telecommunications room (TR). A 50 mm (2 in) conduit is designed from the TR to a pull box located 36.6 m (120 ft) away from the TR. A 1 1/2 inch conduit is designed from the pull box to the zone box located 35.1 m (115 ft) beyond the pull box. Assuming no conduit bends, and excluding the TR and zone box, what is the total number of pull boxes/pull points required in this horizontal conduit system between the telecommunications room (TR) and zone box?
You are designing a cabling system for a chemical plant. What type of device is needed to prevent the spread of fire along the cable other than the barrier penetrations?
A fire ________ is a contained area that is completely enclosed by fire resistant walls, floors, and ceilings.
Within building automation hardware systems, there is a hierarchical system of micro processor based controllers. Which type of controller is used to provide limited port capacity for connection of sensors, support, and execution of DDC programs, and usually operates in stand alone mode?
Within a commercial office building of 2300 sq m (25000 sq ft), how many building automation system (BAS) devices are required?
Color codes for cross-connections fields have been used for many years. Which color is used to identify campus backbone?
Which class of the system applies when the premise only has a single equipment room (ER), and it is the only telecommunications space administered?
Rack mounted hardware is installed in two standard sized racks or cabinets. Those sizes are:
When designing a backbone distribution system, you will need to include a telecommunications enclosure (TE). A TE can be defined as a:
An installation crew is pulling an optical fiber cable into a riser. The cable has an outside diameter of 25 mm (1 in). As the cable is being pulled off the reel and through a pulley into the riser, you must verify that the minimum bend radius for the cable being pulled is observed. The pulley must be sized at a MINIMUM of: