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

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