Data Voice And Video Cabling Test Questions and Answers 100% Correct!!

data - ANSWER-Facts and statistics collected together for reference or analysis fiber optics - ANSWER-signals carried by light beams over glass fibers infrared transmission - ANSWER-A form of wireless transmission where signals are sent as pulses of infrared light. Power line carrier network - ANSWER-sending data signals over regular power lines NEC code requirements - ANSWER-article 725 covers class 1,2,3,or 4 remote-control, signaling, and Power-limited circuits. all articles covered by this can be confusing if you don't understand that articles 1,2,3,and 4 can be either power-limiting or signaling circuits CLASS 1 NEC code - ANSWER-CURCUITS supplied by a source that has an output of more than 30 volts AC or DC and 1000 volt-amperes/watts CLASS 2 NEC CODE - ANSWER-CURCUITS that are inherently limited in capacity they may require np overcurrent protection. CLASS 3 NEC CODE - ANSWER-similar to class 2 circuits CLASS 4 NEC CODE - ANSWER-class 1 circuits are class 4 circuits that are isolated and are used for process control instrumentation. power-limited - ANSWER-a circuit that has a self-limited power level. remote-control and signaling curcuits - ANSWER-1,2,3,4 circuits that do not have limited power rating.