Question 1

The width of the range of frequencies that comprise the signal is the ________.

Accepted Answer

The answer of The width of the range of frequencies...

Question 2

The wavelength of an analog signal is:

Accepted Answer

A) the distance traveled by the wave in the time defined by its period 
B) the distance traveled by the wave in one second 
C) the period of the wave 
D) the amplitude of the wave 
A) the distance traveled by the wave in the time defined by its period 
B) the distance traveled by the wave in one second 
C) the period of the wave 
D) the amplitude of the wave

Question 3

For guided media such as twisted pair,coaxial cable,and optical fiber,the most significant sources of signal quality impairments are: attenuation and attenuation distortion,delay distortion,and __________.

Accepted Answer

The answer of For guided media such as twisted pair,coaxial...

Question 4

Attenuation is greater at lower frequencies.

Accepted Answer

A) True 
 B)False

Question 5

__________ has been experienced by anyone who,while having a telephone conversation,has been able to hear another telephone conversation.

Accepted Answer

The answer of __________ has been experienced by anyone who,while...

Question 6

In the telephone system,conversions are reproduced using the range from 300 - 3400 Hz in order to limit the required capacity of transmission lines.

Accepted Answer

A) True 
 B)False

Question 7

Typically,crosstalk does not have a debilitating effect on signal quality.

Accepted Answer

A) True 
 B)False

Question 8

Nearly all signals used for communications are part of the electromagnetic spectrum.

Accepted Answer

A) True 
 B)False

Question 9

The _________ of a signal is the range of frequencies that it contains.

Accepted Answer

The answer of The _________ of a signal is the...

Question 10

In general,noise can be defined as:

Accepted Answer

A) loud,high amplitude signals 
B) errors in transmission 
C) unwanted energy or signals on the transmission path 
D) analog signals instead of digital 
A) loud,high amplitude signals 
B) errors in transmission 
C) unwanted energy or signals on the transmission path 
D) analog signals instead of digital

Question 11

The designer of a communications facility must deal with four factors: the bandwidth of the signal,the data rate that is used for digital information,the amount of noise and other impairments,and the level of __________ that is acceptable.

Accepted Answer

The answer of The designer of a communications facility must...

Question 12

The frequency of human speech is in the range of:

Accepted Answer

A) 20 - 1000 Hz. 
B) 20 - 3400 
C) 300 - 3400 Hz. 
D) 10 - 25,000 Hz. 
A) 20 - 1000 Hz. 
B) 20 - 3400 
C) 300 - 3400 Hz. 
D) 10 - 25,000 Hz.

Question 13

An antenna with a fixed area receives more signal power.

Accepted Answer

A) True 
 B)False

Question 14

The spectrum of a signal is:

Accepted Answer

A) the lowest frequency value subtracted from the highest 
B) the range of frequencies in the signal 
C) all of the frequencies from 0 to the highest frequency used 
D) the average of the highest frequency and the lowest 
A) the lowest frequency value subtracted from the highest 
B) the range of frequencies in the signal 
C) all of the frequencies from 0 to the highest frequency used 
D) the average of the highest frequency and the lowest

Question 15

Because of its characteristics,free space loss is a particular problem in:

Accepted Answer

A) microwave tower transmissions 
B) WANS 
C) dial up or modem transmissions 
D) satellite transmissions 
A) microwave tower transmissions 
B) WANS 
C) dial up or modem transmissions 
D) satellite transmissions

Question 16

Analog signals differ from digital signals in that:

Accepted Answer

A) analog signals are represented versus time while digital signals are measured versus frequency 
B) analog signals are periodic,digital signals are not 
C) analog signals are continuous while digital signals remain at one constant level and then move to another constant level 
D) analog signals operate at higher frequencies than digital signals 
A) analog signals are represented versus time while digital signals are measured versus frequency 
B) analog signals are periodic,digital signals are not 
C) analog signals are continuous while digital signals remain at one constant level and then move to another constant level 
D) analog signals operate at higher frequencies than digital signals

Question 17

Given a frequency of 60 Hz ( cycles per second ),the period of the signal is:

Accepted Answer

A) 0.166667 sec. 
B) 0.166667 Hz. 
C) one second 
D) 60 seconds 
A) 0.166667 sec. 
B) 0.166667 Hz. 
C) one second 
D) 60 seconds

Question 18

Impulse noise is the primary source of error in digital data communication.

Accepted Answer

A) True 
 B)False

Question 19

Digital signaling usually means that the information being conveyed is binary.

Accepted Answer

A) True 
 B)False

Question 20

Multipath problems are particularly problematic in line of sight applications.

Accepted Answer

A) True 
 B)False

The width of the range of frequencies that comprise the signal is the ________.

The wavelength of an analog signal is:

For guided media such as twisted pair,coaxial cable,and optical fiber,the most significant sources of signal quality impairments are: attenuation and attenuation distortion,delay distortion,and __________.

Attenuation is greater at lower frequencies.

__________ has been experienced by anyone who,while having a telephone conversation,has been able to hear another telephone conversation.

In the telephone system,conversions are reproduced using the range from 300 - 3400 Hz in order to limit the required capacity of transmission lines.

Typically,crosstalk does not have a debilitating effect on signal quality.

Nearly all signals used for communications are part of the electromagnetic spectrum.

The _________ of a signal is the range of frequencies that it contains.

In general,noise can be defined as:

The designer of a communications facility must deal with four factors: the bandwidth of the signal,the data rate that is used for digital information,the amount of noise and other impairments,and the level of __________ that is acceptable.

The frequency of human speech is in the range of:

An antenna with a fixed area receives more signal power.

The spectrum of a signal is:

Because of its characteristics,free space loss is a particular problem in:

Analog signals differ from digital signals in that:

Given a frequency of 60 Hz ( cycles per second ),the period of the signal is:

Impulse noise is the primary source of error in digital data communication.

Digital signaling usually means that the information being conveyed is binary.

Multipath problems are particularly problematic in line of sight applications.

Introduction

Business Information

Distributed Data Processing

Data Communication Fundamentals

Data Link Control and Multiplexing

The Internet

Tcp / Ip

Client Server, intranet, and Cloud Computing

Internet-Based Applications

Internet Operation

Lan Architecture and Infrastructure

Ethernet, switches, and Virtual Lans

Wireless Lans

Wan Technology and Protocol

Wan Services

Wireless Lans

Computer and Network Security Threats

Computer and Network Security Techniques

Filters

Exam 4: Data Transmission

The width of the range of frequencies that comprise the signal is the ________.

The wavelength of an analog signal is:

For guided media such as twisted pair,coaxial cable,and optical fiber,the most significant sources of signal quality impairments are: attenuation and attenuation distortion,delay distortion,and __________.

Attenuation is greater at lower frequencies.

__________ has been experienced by anyone who,while having a telephone conversation,has been able to hear another telephone conversation.

In the telephone system,conversions are reproduced using the range from 300 - 3400 Hz in order to limit the required capacity of transmission lines.

Typically,crosstalk does not have a debilitating effect on signal quality.

Nearly all signals used for communications are part of the electromagnetic spectrum.

The _________ of a signal is the range of frequencies that it contains.

In general,noise can be defined as:

The designer of a communications facility must deal with four factors: the bandwidth of the signal,the data rate that is used for digital information,the amount of noise and other impairments,and the level of __________ that is acceptable.

The frequency of human speech is in the range of:

An antenna with a fixed area receives more signal power.

The spectrum of a signal is:

Because of its characteristics,free space loss is a particular problem in:

Analog signals differ from digital signals in that:

Given a frequency of 60 Hz ( cycles per second ),the period of the signal is:

Impulse noise is the primary source of error in digital data communication.

Digital signaling usually means that the information being conveyed is binary.

Multipath problems are particularly problematic in line of sight applications.

Introduction

Business Information

Distributed Data Processing

Data Communication Fundamentals

Data Link Control and Multiplexing

The Internet

Tcp / Ip

Client Server, intranet, and Cloud Computing

Internet-Based Applications

Internet Operation

Lan Architecture and Infrastructure

Ethernet, switches, and Virtual Lans

Wireless Lans

Wan Technology and Protocol

Wan Services

Wireless Lans

Computer and Network Security Threats

Computer and Network Security Techniques

Filters