Test Bank For Network Guide to Networks 6th Edition by Tamara Dean
Chapter 3: Transmission Basics and Networking Media
TRUE/FALSE
1.The strength of an electrical signal is directly proportional to its frequency.
ANS: F PTS: 1 REF: 77
2.Modulation can be used to make a signal conform to a specific pathway.
ANS: T PTS: 1 REF: 82
3.Ethernet is an example of a baseband system found on many LANs.
ANS: T PTS: 1 REF: 89
4.Latency occurs when a signal traveling on one wire or cable infringes on the signal traveling over an adjacent wire or cable.
ANS: F PTS: 1 REF: 90
5.The maximum distance a signal can travel and still be interpreted accurately is equal to a segment’s maximum length.
ANS: T PTS: 1 REF: 95
MULTIPLE CHOICE
1.The distance between corresponding points on a wave’s cycle is called its ____.
|
a. |
amplitude |
c. |
phase |
|
b. |
frequency |
d. |
wavelength |
ANS: D PTS: 1 REF: 78
2.A digital signal composed of a pulse of positive voltage represents a(n) ____.
|
a. |
0 |
c. |
4 |
|
b. |
1 |
d. |
8 |
ANS: B PTS: 1 REF: 79
3.The byte 00001110 means ____ on a digital network.
|
a. |
3 |
c. |
14 |
|
b. |
6 |
d. |
30 |
ANS: C PTS: 1 REF: 79
4.In modulation, a simple wave called a(n) ____ wave, is combined with another analog signal to produce a unique signal that gets transmitted from one node to another.
|
a. |
carrier |
c. |
information |
|
b. |
data |
d. |
FM |
ANS: A PTS: 1 REF: 82
5.When signals are free to travel in both directions over a medium simultaneously, the transmission is considered ____.
|
a. |
simplex |
c. |
half-duplex |
|
b. |
multiplex |
d. |
full-duplex |
ANS: D PTS: 1 REF: 83
6.____ is a technology used with fiber-optic cable, which enables one fiber-optic connection to carry multiple light signals simultaneously.
|
a. |
Statistical multiplexing |
|
b. |
WDM (wavelength division multiplexing) |
|
c. |
TDM (time division multiplexing) |
|
d. |
FDM (frequency division multiplexing) |
ANS: B PTS: 1 REF: 86
7.The data transmission characteristic most frequently discussed and analyzed by networking professionals is ____.
|
a. |
noise |
c. |
throughput |
|
b. |
scalability |
d. |
cost |
ANS: C PTS: 1 REF: 88
8.One of the most common transmission flaws affecting data signals is ____.
|
a. |
noise |
c. |
throughput |
|
b. |
attenuation |
d. |
latency |
ANS: A PTS: 1 REF: 90
9.The most significant factor in choosing a transmission method is its ____.
|
a. |
noise |
c. |
throughput |
|
b. |
attenuation |
d. |
latency |
ANS: C PTS: 1 REF: 93
10.The more twists per foot in a pair of wires, the more resistant the pair will be to ____.
|
a. |
throughput |
c. |
cross talk |
|
b. |
attenuation |
d. |
latency |
ANS: C PTS: 1 REF: 99
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