A. repeater (x) B. backoff C. terminator D. suppressor A. 100 ohm unshielded twisted pair cable B. 150 ohm shielded twisted pair cable C. 62.5/125 micron fiber-optic cable (x) D. 50 ohm coaxial cable A. A voltage regulator, that will shut off the network if the voltage gets too high, should be installed at both buildings. B. Fiber-optic cable should be used as the backbone of the network. (x) C. Shielded twisted pair (STP) cable should be used as the backbone of the network. D. New ground wires should be installed so that the energy potentials between the buildings will be the same. A. next to the POP B. on the first floor C. on one of the middle floors (x) D. in the basement A. The insulation in the wire acts as a lightning rod and attracts the strike. B. The copper provides a pathway for lightning to enter a building. (x) C. It won't facilitate lightning strikes if the wire is fused at both ends. D. It does not facilitate lightning strikes unless the copper has been damaged. A. nothing B. you complete the circuit and get a shock (x) C. the computer receives a power surge D. the computer may lose data A. oscillations B. sags C. surges (x) D. brownouts A. grounding cables B. surge suppressors (x) C. line voltage meter D. uninterruptible power supplies A. They provide false color lighting which can lead to mistakes in making connections. B. They generate outside interference. (x) C. They can degrade some plastic materials used in network equipment. D. There often is insufficient room in a wiring closet to change out the fluorescent bulbs easily and safely. A. one B. three C. six (x) D. nine A. DC helps computers to work more efficiently, whereas AC can cause noise. B. AC flows at a constant value, whereas DC rises and falls. C. DC shifts ions from pole to pole, whereas AC ions run in one direction. D. DC flows at a constant value, whereas AC rises and falls. (x) A. It erases power supplies, hard drives, and RAM. B. It destroys semiconductors and data. (x) C. It shoots alternating current through a computer. D. It overwrites the BIOS chip. A. Only touch electrical devices with one hand at a time to prevent electricity from flowing through the body. (x) B. When setting up the network only use one bare hand--always wear a glove on at least one hand. C. When using tools that are not insulated only use one hand, hold onto a ground with the other hand. D. There is no such rule. A. by overflowing the logic gates B. by adding unwanted voltage to the desired signals (x) C. by hindering the CPU in detecting signal waves D. by intensifying the leading and trailing edges on signals A. collecting information about the organization (x) B. gathering information about the network devices and media that will be used C. documenting costs and developing a budget for implementation D. identifying the resources and constraints of the organization A. when the earth ground is attached to multiple floors of a building B. when the earth grounds between two parts of a network are identical C. when the power plant sends an irregular surge of power that defeats the earth ground D. when ground wires in separate locations have slightly different potential (x) A. excessively long electrical wiring runs (x) B. nearby lightning strikes C. a power line that falls below 80% of the normal voltage D. power company switching operations A. Identify the number of computers that will be part of the network. B. Identify the number of printers and file servers that will be part of the network. C. Identify on a floor plan, all devices that will be connected to the network. (x) D. Identify the topological requirements of devices that will be in the network. A. connects the hot wire to the chassis B. prevents metal parts from discharging hazardous voltage through the chassis C. connects the neutral wire to the chassis D. prevents metal parts from becoming energized with a hazardous voltage (x?) A. They go directly to the computer chassis. (x) B. They go directly to the computer's CPU. C. They short wires to the power supply. D. They fuse computer components. A. tile or other finished surface (x) B. carpet C. unfinished stone D. electronics grade carpet A. Nothing, because IEEE standards separate LAN networking media from power connections. B. The networking media could allow the network to run at higher speeds. C. The networking media would ground the signal preventing it from operating normally. D. There could be potentially fatal voltages between the LAN's UTP cabling and the chassis of a networking device. (x) A. No horizontal cabling coming from work areas should be run under a raised floor. B. All cable leaving the room to intermediate distribution facilities and computer and communications rooms located on other floors of a building should be via 8 cm (or smaller) conduits or sleeved cores. C. Any wall or ceiling openings provided for conduits or sleeved cores must be sealed with smoke and flame retardant materials. (x) D. The room should be equipped with a single stage sprinkler system. |