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Test Bank For Network + Guide to Networks 6th Edition by Tamara Dean

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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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