A reasonable approximation for the signal speed in 100 ohm balanced twisted pair cable is __________, where c is the velocity of light in free space.
0.2 c
0.4 c
0.6 c
08 c
0.9 c
Correct answer: C
Question 2
Assume that the optical power transmitted by a 62.5/125 multimode fiber is distributed uniformly across its core. If this fiber is perfectly coupled (i.e., the two fibers are aligned and abutted) to a 50/125 fiber, what is the percent of power that is lost?
0 percent
36 percent
50 percent
80 percent
100 percent
Correct answer: B
Question 3
You must place a cable between 2 equipment locations with separate grounds having a potential difference between them of 2.1 V rms.
Which one of the following cables should NOT be used?