Question 1

In general, networks designed to transmit primarily computer data are likely to be ________.

Accepted Answer

A) international 
B) level 1 
C) numeric 
D) analog 
E) digital 
A) international 
B) level 1 
C) numeric 
D) analog 
E) digital

Question 2

Wavelength division multiplexing can only used with copper cables.

Accepted Answer

A) True 
 B)False

Question 3

The "local loop" refers to the wires that run from the customer premises to the telephone switch of the telephone company.

Accepted Answer

A) True 
 B)False

Question 4

The height of a sound wave is called its:

Accepted Answer

A) frequency 
B) phase 
C) amplitude 
D) bandwidth 
E) furlong 
A) frequency 
B) phase 
C) amplitude 
D) bandwidth 
E) furlong

Question 5

___________ is not a type of digital signaling technique.

Accepted Answer

A) Non-return-to-zero signaling 
B) Unipolar signaling 
C) Manchester encoding 
D) Return-to-zero signaling 
E) Data rate signaling 
A) Non-return-to-zero signaling 
B) Unipolar signaling 
C) Manchester encoding 
D) Return-to-zero signaling 
E) Data rate signaling

Question 6

Which of the following would be considered a type of wireless media?

Accepted Answer

A) unshielded twisted pair 
B) shielded twisted pair 
C) coaxial cable 
D) microwave 
E) fiber optics 
A) unshielded twisted pair 
B) shielded twisted pair 
C) coaxial cable 
D) microwave 
E) fiber optics

Question 7

____________ is one of the most commonly used coding schemes used in data transmission.

Accepted Answer

A) ASCII 
B) ISDN 
C) MAU 
D) ATM 
E) FDM 
A) ASCII 
B) ISDN 
C) MAU 
D) ATM 
E) FDM

Question 8

Time non-statistical) division multiplexing differs from frequency division multiplexing because it:

Accepted Answer

A) does not share a communication circuit 
B) splits the communication circuit vertically with time slots) instead of horizontally 
C) increases the wavelength and phase angles of the baseband frequency used for transmission 
D) moves the baseband of a circuit by shifting it to a higher frequency 
E) reduces baseband signal velocity more than frequency division multiplexing 
A) does not share a communication circuit 
B) splits the communication circuit vertically with time slots) instead of horizontally 
C) increases the wavelength and phase angles of the baseband frequency used for transmission 
D) moves the baseband of a circuit by shifting it to a higher frequency 
E) reduces baseband signal velocity more than frequency division multiplexing

Question 9

____________ refers to changing the shape of the sound wave in different ways to represent a 1 or a 0.

Accepted Answer

A) digitizing. 
B) sampling 
C) modulation 
D) demodulation 
E) shaping 
A) digitizing. 
B) sampling 
C) modulation 
D) demodulation 
E) shaping

Question 10

How is data transmitted in parallel? What feature distinguishes serial mode from parallel mode?

Accepted Answer

Data transmission can occur in two prima

Question 11

Why is data compression so useful? Describe how it works.

Accepted Answer

Data compression is incredibly useful be

Question 12

The _____________ of a circuit determines a circuit's capacity.

Accepted Answer

A) frequency 
B) bandwidth 
C) phase 
D) amplitude 
E) loudness 
A) frequency 
B) bandwidth 
C) phase 
D) amplitude 
E) loudness

Question 13

Signal bandwidth is the difference between the highest and lowest frequencies in a band.

Accepted Answer

A) True 
 B)False

Question 14

In a multipoint circuit configuration, each computer has a dedicated circuit between itself and each of the other computers in the network.

Accepted Answer

A) True 
 B)False

Question 15

When all bits of a character are transferred one after another, the bits are transferred in ___________ mode.

Accepted Answer

A) serial 
B) frequency division 
C) multiplexing 
D) parallel 
E) full complex 
A) serial 
B) frequency division 
C) multiplexing 
D) parallel 
E) full complex

Question 16

With modem communications, the receiving modem converts the incoming digital signal from the telephone line into an analog signal that can be understood by the computer.

Accepted Answer

A) True 
 B)False

Question 17

Multiplexing increases the cost of provisioning network circuits.

Accepted Answer

A) True 
 B)False

Question 18

Clearly explain the differences between analog data, analog transmission, digital data, and digital transmission.

Accepted Answer

Analog data refers to information that i

Question 19

Another term for the weakening of a signal over distance is:

Accepted Answer

A) turnaround time 
B) propagation delay 
C) dispersion 
D) insulation 
E) attenuation 
A) turnaround time 
B) propagation delay 
C) dispersion 
D) insulation 
E) attenuation

Question 20

Coding schemes are groups of bits that translate into the "alphabet" of any given system.

Accepted Answer

A) True 
 B)False

In general, networks designed to transmit primarily computer data are likely to be ________.

Wavelength division multiplexing can only used with copper cables.

The "local loop" refers to the wires that run from the customer premises to the telephone switch of the telephone company.

The height of a sound wave is called its:

___________ is not a type of digital signaling technique.

Which of the following would be considered a type of wireless media?

____________ is one of the most commonly used coding schemes used in data transmission.

Time non-statistical) division multiplexing differs from frequency division multiplexing because it:

____________ refers to changing the shape of the sound wave in different ways to represent a 1 or a 0.

How is data transmitted in parallel? What feature distinguishes serial mode from parallel mode?

Why is data compression so useful? Describe how it works.

The _____________ of a circuit determines a circuit's capacity.

Signal bandwidth is the difference between the highest and lowest frequencies in a band.

In a multipoint circuit configuration, each computer has a dedicated circuit between itself and each of the other computers in the network.

When all bits of a character are transferred one after another, the bits are transferred in ___________ mode.

With modem communications, the receiving modem converts the incoming digital signal from the telephone line into an analog signal that can be understood by the computer.

Multiplexing increases the cost of provisioning network circuits.

Clearly explain the differences between analog data, analog transmission, digital data, and digital transmission.

Another term for the weakening of a signal over distance is:

Coding schemes are groups of bits that translate into the "alphabet" of any given system.

Introduction to Data Communications

Application Layer

Data Link Layer

Network and Transport Layers

Network Design

Wired and Wireless Local Area Networks

Backbone Networks

Wide Area Networks

The Internet

Network Security

Network Management

Filters

Exam 3: Physical Layer

In general, networks designed to transmit primarily computer data are likely to be ________.

Wavelength division multiplexing can only used with copper cables.

The "local loop" refers to the wires that run from the customer premises to the telephone switch of the telephone company.

The height of a sound wave is called its:

___________ is not a type of digital signaling technique.

Which of the following would be considered a type of wireless media?

____________ is one of the most commonly used coding schemes used in data transmission.

Time non-statistical) division multiplexing differs from frequency division multiplexing because it:

____________ refers to changing the shape of the sound wave in different ways to represent a 1 or a 0.

How is data transmitted in parallel? What feature distinguishes serial mode from parallel mode?

Why is data compression so useful? Describe how it works.

The _____________ of a circuit determines a circuit's capacity.

Signal bandwidth is the difference between the highest and lowest frequencies in a band.

In a multipoint circuit configuration, each computer has a dedicated circuit between itself and each of the other computers in the network.

When all bits of a character are transferred one after another, the bits are transferred in ___________ mode.

With modem communications, the receiving modem converts the incoming digital signal from the telephone line into an analog signal that can be understood by the computer.

Multiplexing increases the cost of provisioning network circuits.

Clearly explain the differences between analog data, analog transmission, digital data, and digital transmission.

Another term for the weakening of a signal over distance is:

Coding schemes are groups of bits that translate into the "alphabet" of any given system.

Introduction to Data Communications

Application Layer

Data Link Layer

Network and Transport Layers

Network Design

Wired and Wireless Local Area Networks

Backbone Networks

Wide Area Networks

The Internet

Network Security

Network Management

Filters