Question 1

Data compression can increase the throughput of a communication link.

Accepted Answer

A) True 
 B)False

Question 2

Describe how data could be transmitted using frequency modulation.

Accepted Answer

Frequency modulation (FM) is a method of

Question 3

What are the three important characteristics of a sound wave?

Accepted Answer

The three important characteristics of a

Question 4

Frequency is the number of cycles per second and is expressed in Hertz.

Accepted Answer

A) True 
 B)False

Question 5

What is a modem? How does a modem send digital data on an analog network, explaining the process step by step?

Accepted Answer

A modem, short for modulator-demodulator

Question 6

Having a conversation with someone using a cellular phone is an example of _________ transmission.

Accepted Answer

A) simplex 
B) full-duplex 
C) half-duplex 
D) analog 
E) digital 
A) simplex 
B) full-duplex 
C) half-duplex 
D) analog 
E) digital

Question 7

Describe the three types of data flows, and discuss why some are applicable in some situations and vice versa.

Accepted Answer

The three types of data flows are batch

Question 8

With respect to converting digital data into analog signals, AM stands for:

Accepted Answer

A) Asynchronous Manchester 
B) Analog Multimode 
C) Amplitude Modulation 
D) Anomaly Multiplexing 
E) Analytical Mosaic 
A) Asynchronous Manchester 
B) Analog Multimode 
C) Amplitude Modulation 
D) Anomaly Multiplexing 
E) Analytical Mosaic

Question 9

A _________ is an FDM device that splits the physical circuit into three logical circuits phone, upstream data, downstream data).

Accepted Answer

A) DSL modem 
B) cable modem 
C) wireless router 
D) V.44 modem 
E) Serial modem 
A) DSL modem 
B) cable modem 
C) wireless router 
D) V.44 modem 
E) Serial modem

Question 10

Is the bit rate the same as the symbol rate? Explain.

Accepted Answer

No, the bit rate is not the same as the

Question 11

The medium is the physical matter or substance that carries the voice or data transmission.

Accepted Answer

A) True 
 B)False

Question 12

Nonreturn to zero is a type of unipolar signaling

Accepted Answer

A) True 
 B)False

Question 13

The amount of time it takes to switch between sending and receiving in half-duplex transmission is called the propagation delay.

Accepted Answer

A) True 
 B)False

Question 14

Microwave transmission:

Accepted Answer

A) is a type of high frequency radio communication 
B) requires a clear line-of-sight path 
C) is typically used for long distance data transmission 
D) does not require the laying of any cable 
E) all of the above 
A) is a type of high frequency radio communication 
B) requires a clear line-of-sight path 
C) is typically used for long distance data transmission 
D) does not require the laying of any cable 
E) all of the above

Question 15

Radio, microwave and satellite are all examples of guided media.

Accepted Answer

A) True 
 B)False

Question 16

How does bipolar signaling differ from unipolar signaling? Why is Manchester encoding more popular than either? What kind of signaling is used in Ethernet?

Accepted Answer

Bipolar signaling differs from unipolar

Question 17

___________ refers to the spreading of the signal that different parts of the signal arrive at different times at the destination.

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 18

Amplitude, frequency and phase are all characteristics of a sound wave.

Accepted Answer

A) True 
 B)False

Question 19

Baud rate is the number of bits transmitted per second.

Accepted Answer

A) True 
 B)False

Question 20

When converting analog voice data to digital signals, Pulse Code Modulation typically samples the incoming voice signal _______ times per second.

Accepted Answer

A) 8,000 
B) 8 
C) 18,000 
D) 64 
E) 256 
A) 8,000 
B) 8 
C) 18,000 
D) 64 
E) 256

Data compression can increase the throughput of a communication link.

Describe how data could be transmitted using frequency modulation.

What are the three important characteristics of a sound wave?

Frequency is the number of cycles per second and is expressed in Hertz.

What is a modem? How does a modem send digital data on an analog network, explaining the process step by step?

Having a conversation with someone using a cellular phone is an example of _________ transmission.

Describe the three types of data flows, and discuss why some are applicable in some situations and vice versa.

With respect to converting digital data into analog signals, AM stands for:

A _________ is an FDM device that splits the physical circuit into three logical circuits phone, upstream data, downstream data).

Is the bit rate the same as the symbol rate? Explain.

The medium is the physical matter or substance that carries the voice or data transmission.

Nonreturn to zero is a type of unipolar signaling

The amount of time it takes to switch between sending and receiving in half-duplex transmission is called the propagation delay.

Microwave transmission:

Radio, microwave and satellite are all examples of guided media.

How does bipolar signaling differ from unipolar signaling? Why is Manchester encoding more popular than either? What kind of signaling is used in Ethernet?

___________ refers to the spreading of the signal that different parts of the signal arrive at different times at the destination.

Amplitude, frequency and phase are all characteristics of a sound wave.

Baud rate is the number of bits transmitted per second.

When converting analog voice data to digital signals, Pulse Code Modulation typically samples the incoming voice signal _______ times per second.

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

Data compression can increase the throughput of a communication link.

Describe how data could be transmitted using frequency modulation.

What are the three important characteristics of a sound wave?

Frequency is the number of cycles per second and is expressed in Hertz.

What is a modem? How does a modem send digital data on an analog network, explaining the process step by step?

Having a conversation with someone using a cellular phone is an example of _________ transmission.

Describe the three types of data flows, and discuss why some are applicable in some situations and vice versa.

With respect to converting digital data into analog signals, AM stands for:

A _________ is an FDM device that splits the physical circuit into three logical circuits phone, upstream data, downstream data).

Is the bit rate the same as the symbol rate? Explain.

The medium is the physical matter or substance that carries the voice or data transmission.

Nonreturn to zero is a type of unipolar signaling

The amount of time it takes to switch between sending and receiving in half-duplex transmission is called the propagation delay.

Microwave transmission:

Radio, microwave and satellite are all examples of guided media.

How does bipolar signaling differ from unipolar signaling? Why is Manchester encoding more popular than either? What kind of signaling is used in Ethernet?

___________ refers to the spreading of the signal that different parts of the signal arrive at different times at the destination.

Amplitude, frequency and phase are all characteristics of a sound wave.

Baud rate is the number of bits transmitted per second.

When converting analog voice data to digital signals, Pulse Code Modulation typically samples the incoming voice signal _______ times per second.

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