Question 1

Signals in copper wire are transmitted as _____.

Accepted Answer

A) sound signals 
B) light signals 
C) electrical signals. 
D) smoke signals 
A) sound signals 
B) light signals 
C) electrical signals. 
D) smoke signals C

Question 2

A bit _____.

Accepted Answer

A) transforms elements from one set of elements to another set 
B) generates sine waves for transmission over a medium 
C) is the unit of information that designates one of two possible states 
D) changes one or more properties of a sine wave in response to data 
A) transforms elements from one set of elements to another set 
B) generates sine waves for transmission over a medium 
C) is the unit of information that designates one of two possible states 
D) changes one or more properties of a sine wave in response to data C

Question 3

Amplitude is a measure of _____.

Accepted Answer

A) the height of a sine wave 
B) the number of cycles made by a sine wave in one second 
C) the position of a sine wave at the start time 
D) None of the above 
A) the height of a sine wave 
B) the number of cycles made by a sine wave in one second 
C) the position of a sine wave at the start time 
D) None of the above A

Question 4

A CAT 5 cable is terminated using connectors called _____.

Accepted Answer

A) RJ 11 connectors 
B) RJ 19 connectors 
C) RJ 45 connectors 
D) RJ 54 connectors 
A) RJ 11 connectors 
B) RJ 19 connectors 
C) RJ 45 connectors 
D) RJ 54 connectors

Question 5

Quadrature amplitude modulation _____.

Accepted Answer

A) is another name for amplitude modulation 
B) combines amplitude modulation with phase modulation 
C) combines amplitude modulation with frequency modulation 
D) None of the above 
A) is another name for amplitude modulation 
B) combines amplitude modulation with phase modulation 
C) combines amplitude modulation with frequency modulation 
D) None of the above

Question 6

The ASCII code is used to encode _____.

Accepted Answer

A) characters in the English alphabet 
B) characters in the Chinese language 
C) characters in all languages 
D) characters in most languages spoken around the world 
A) characters in the English alphabet 
B) characters in the Chinese language 
C) characters in all languages 
D) characters in most languages spoken around the world

Question 7

The figure shows an example of _____.

Accepted Answer

A) digital data transmitted using a digital signal 
B) digital data transmitted using an analog signal 
C) analog data transmitted using a digital signal 
D) analog data transmitted using an analog signal 
A) digital data transmitted using a digital signal 
B) digital data transmitted using an analog signal 
C) analog data transmitted using a digital signal 
D) analog data transmitted using an analog signal

Question 8

A signal is _____.

Accepted Answer

A) information added to data to remove errors 
B) cables connecting networked locations 
C) detectable transmitted energy that can be used to carry information 
D) converting data to signals for transmission over physical media 
A) information added to data to remove errors 
B) cables connecting networked locations 
C) detectable transmitted energy that can be used to carry information 
D) converting data to signals for transmission over physical media

Question 9

Noise is _____.

Accepted Answer

A) the transformation of elements from one set of elements to another set 
B) the generation of sine waves for transmission over a medium 
C) changing one or more properties of a sine wave in response to data 
D) any disturbance that interferes with the normal operation of a device 
A) the transformation of elements from one set of elements to another set 
B) the generation of sine waves for transmission over a medium 
C) changing one or more properties of a sine wave in response to data 
D) any disturbance that interferes with the normal operation of a device

Question 10

A physical medium is _____.

Accepted Answer

A) the transmission path over which a signal propagates 
B) the method of combining multiple signals for transmission over one medium 
C) used to convert data to signals for transmission 
D) detectable transmitted energy that can be used to carry information 
A) the transmission path over which a signal propagates 
B) the method of combining multiple signals for transmission over one medium 
C) used to convert data to signals for transmission 
D) detectable transmitted energy that can be used to carry information

Question 11

Data is converted to signals for transmission because _____.

Accepted Answer

A) data is expensive to transport over physical media 
B) there is no known method to transport data over physical media 
C) signals are inexpensive to transport over physical media 
D) network carriers prefer to transport signals 
A) data is expensive to transport over physical media 
B) there is no known method to transport data over physical media 
C) signals are inexpensive to transport over physical media 
D) network carriers prefer to transport signals

Question 12

Modulation is the process of _____.

Accepted Answer

A) spinning a wheel to generate a sine wave 
B) increasing the amplitude of a sine wave 
C) increasing the frequency of a sine wave 
D) changing one or more properties of a sine wave in response to data 
A) spinning a wheel to generate a sine wave 
B) increasing the amplitude of a sine wave 
C) increasing the frequency of a sine wave 
D) changing one or more properties of a sine wave in response to data

Question 13

The only layer in the TCP/ IP stack that deals with the limitations of nature is _____.

Accepted Answer

A) the data link layer 
B) the physical layer 
C) the network layer 
D) the transport layer 
A) the data link layer 
B) the physical layer 
C) the network layer 
D) the transport layer

Question 14

In TDM _____.

Accepted Answer

A) signals from each channel are sent at a specified frequency 
B) signals from each channel are sent at a specified amplitude 
C) signals from each channel are sent at a specified phase 
D) signals from each channel are sent at a specified time 
A) signals from each channel are sent at a specified frequency 
B) signals from each channel are sent at a specified amplitude 
C) signals from each channel are sent at a specified phase 
D) signals from each channel are sent at a specified time

Question 15

Good signals have all the following properties except _____.

Accepted Answer

A) good signals do not need to be multiplexed 
B) good signals are efficient at using bandwidth 
C) good signals are resistant to noise 
D) good signals are easy to detect at the receiver's end 
A) good signals do not need to be multiplexed 
B) good signals are efficient at using bandwidth 
C) good signals are resistant to noise 
D) good signals are easy to detect at the receiver's end

Question 16

Coding is _____.

Accepted Answer

A) the unit of information 
B) the transformation of elements from one set of elements to another set 
C) the generation of sine waves for transmission over a medium 
D) changing one or more properties of a sine wave in response to data 
A) the unit of information 
B) the transformation of elements from one set of elements to another set 
C) the generation of sine waves for transmission over a medium 
D) changing one or more properties of a sine wave in response to data

Question 17

Unicode is used to encode _____.

Accepted Answer

A) characters in the English alphabet only 
B) characters in the Chinese language only 
C) characters in most languages 
D) characters in the 5 most common languages spoken around the world 
A) characters in the English alphabet only 
B) characters in the Chinese language only 
C) characters in most languages 
D) characters in the 5 most common languages spoken around the world

Question 18

The term UTP stands for _____.

Accepted Answer

A) unshielded telephone pair 
B) unshielded twisted pair 
C) uncovered twisted pair 
D) uncovered telephone pair 
A) unshielded telephone pair 
B) unshielded twisted pair 
C) uncovered twisted pair 
D) uncovered telephone pair

Question 19

Binary signals are preferred over other forms of signals ternary,decimal etc)because _____.

Accepted Answer

A) binary signals are the easiest to detect reliably by the receiver 
B) binary signals can carry the most amount of information in a given time period 
C) binary signals are the fastest known means of transmitting data 
D) binary signals are the easiest to generate for the sender 
A) binary signals are the easiest to detect reliably by the receiver 
B) binary signals can carry the most amount of information in a given time period 
C) binary signals are the fastest known means of transmitting data 
D) binary signals are the easiest to generate for the sender

Question 20

In FDM _____.

Accepted Answer

A) signals from each channel are sent at a specified frequency 
B) signals from each channel are sent at a specified amplitude 
C) signals from each channel are sent at a specified phase 
D) signals from each channel are sent at a specified time 
A) signals from each channel are sent at a specified frequency 
B) signals from each channel are sent at a specified amplitude 
C) signals from each channel are sent at a specified phase 
D) signals from each channel are sent at a specified time

Signals in copper wire are transmitted as _____.

A bit _____.

Amplitude is a measure of _____.

A CAT 5 cable is terminated using connectors called _____.

Quadrature amplitude modulation _____.

The ASCII code is used to encode _____.

The figure shows an example of _____.

A signal is _____.

Noise is _____.

A physical medium is _____.

Data is converted to signals for transmission because _____.

Modulation is the process of _____.

The only layer in the TCP/ IP stack that deals with the limitations of nature is _____.

In TDM _____.

Good signals have all the following properties except _____.

Coding is _____.

Unicode is used to encode _____.

The term UTP stands for _____.

Binary signals are preferred over other forms of signals ternary,decimal etc)because _____.

In FDM _____.

Introduction

Data Link Layer

Network Layer

Transport Layer

Application Layer

Support Services

Subnetting

Routing

Wide Area Networks

Wireless Networks

Phone Networks

Network Security

Managerial Issues

Filters

Exam 2: Physical Layer

Signals in copper wire are transmitted as _____.

A bit _____.

Amplitude is a measure of _____.

A CAT 5 cable is terminated using connectors called _____.

Quadrature amplitude modulation _____.

The ASCII code is used to encode _____.

The figure shows an example of _____.

A signal is _____.

Noise is _____.

A physical medium is _____.

Data is converted to signals for transmission because _____.

Modulation is the process of _____.

The only layer in the TCP/ IP stack that deals with the limitations of nature is _____.

In TDM _____.

Good signals have all the following properties except _____.

Coding is _____.

Unicode is used to encode _____.

The term UTP stands for _____.

Binary signals are preferred over other forms of signals ternary,decimal etc)because _____.

In FDM _____.

Introduction

Data Link Layer

Network Layer

Transport Layer

Application Layer

Support Services

Subnetting

Routing

Wide Area Networks

Wireless Networks

Phone Networks

Network Security

Managerial Issues

Filters