Question 1

Statistical time division multiplexing does not require the capacity of the circuit to be equal to the sum of the combined circuits.

Accepted Answer

A) True 
 B)False  True

Question 2

Serial mode transmission is much faster than parallel mode transmission.

Accepted Answer

A) True 
 B)False  False

Question 3

Equipment used to transform analog voice signals to digital signals and digital signals to analog signals.

Accepted Answer

A) voice converter 
B) modem 
C) codec 
D) multiplexer 
E) demodulator 
A) voice converter 
B) modem 
C) codec 
D) multiplexer 
E) demodulator C

Question 4

Describe how data could be transmitted using phase modulation.

Accepted Answer

Phase modulation is a method of transmit

Question 5

Microwave transmissions require a line of sight between any two points.

Accepted Answer

A) True 
 B)False

Question 6

Based on the TIA/EIA 568-B structured cabling standard, the cabling that runs from the telecommunications closet to each work area is called backbone cabling.

Accepted Answer

A) True 
 B)False

Question 7

Explain two reasons why the use of twisted pair cable is becoming more common than the use of coax cable?

Accepted Answer

There are two main reasons why the use o

Question 8

Which of the following media has the lowest error rates and the highest transmission speeds?

Accepted Answer

A) Coaxial cable 
B) unshielded twisted pair 
C) shielded twisted pair 
D) fiber optic cable 
E) infrared 
A) Coaxial cable 
B) unshielded twisted pair 
C) shielded twisted pair 
D) fiber optic cable 
E) infrared

Question 9

In full-duplex transmission, two stations can send and receive simultaneously.

Accepted Answer

A) True 
 B)False

Question 10

What is the difference between multiplexing and modulation? Why are each important?

Accepted Answer

Multiplexing and modulation are both imp

Question 11

How does analog data differ from digital data?

Accepted Answer

Analog data and digital data represent t

Question 12

With nonreturn to zero signaling, the voltage alternates between zero and a positive or negative voltage.

Accepted Answer

A) True 
 B)False

Question 13

The type of multiplexer that divides the circuit horizontally into different light frequencies that are transmitted simultaneously across many channels is a:

Accepted Answer

A) wavelength division multiplexer 
B) time division multiplexer 
C) statistical time division multiplexer 
D) frequency division multiplexer 
E) statistical frequency division multiplexer 
A) wavelength division multiplexer 
B) time division multiplexer 
C) statistical time division multiplexer 
D) frequency division multiplexer 
E) statistical frequency division multiplexer

Question 14

______________ refers to the time it takes for a signal to travel from sender to recipient highly exaggerated with satellite transmission).

Accepted Answer

A) Line-of-sight effect 
B) Multimode index 
C) Saturation effect 
D) Raindrop attenuation 
E) Propagation delay 
A) Line-of-sight effect 
B) Multimode index 
C) Saturation effect 
D) Raindrop attenuation 
E) Propagation delay

Question 15

What is the typical sampling network in telephony? Why is a higher sampling rate more effective for sound quality?

Accepted Answer

The typical sampling network in telephon

Question 16

ASCII is the least popular code for data communications.

Accepted Answer

A) True 
 B)False

Question 17

Radio data transmission requires that each device has a radio receiver/transmitter and uses a specific frequency.

Accepted Answer

A) True 
 B)False

Question 18

_________ is the basic physical layout of the circuit.

Accepted Answer

A) point-to-point configuration 
B) configuration 
C) circuit configuration 
D) circuit design 
E) circuit plan 
A) point-to-point configuration 
B) configuration 
C) circuit configuration 
D) circuit design 
E) circuit plan

Question 19

Coaxial cable costs less and offers less shielding to electrical interference than twisted pair cable.

Accepted Answer

A) True 
 B)False

Question 20

Which of the following statements is true?

Accepted Answer

A) the longer the distance of a telephone wire between sender and recipient, the lower the bandwidth across that wire 
B) the shorter the distance of a telephone wire between sender and recipient, the lower the bandwidth across that wire 
C) bandwidth is constant across any wire, therefore distance is not relevant to its capacity 
D) the longer the distance of a telephone wire between sender and recipient, the higher the bandwidth across that wire 
E) bandwidth is not a term that can be used when discussing telephone transmissions 
A) the longer the distance of a telephone wire between sender and recipient, the lower the bandwidth across that wire 
B) the shorter the distance of a telephone wire between sender and recipient, the lower the bandwidth across that wire 
C) bandwidth is constant across any wire, therefore distance is not relevant to its capacity 
D) the longer the distance of a telephone wire between sender and recipient, the higher the bandwidth across that wire 
E) bandwidth is not a term that can be used when discussing telephone transmissions

Statistical time division multiplexing does not require the capacity of the circuit to be equal to the sum of the combined circuits.

Serial mode transmission is much faster than parallel mode transmission.

Equipment used to transform analog voice signals to digital signals and digital signals to analog signals.

Describe how data could be transmitted using phase modulation.

Microwave transmissions require a line of sight between any two points.

Based on the TIA/EIA 568-B structured cabling standard, the cabling that runs from the telecommunications closet to each work area is called backbone cabling.

Explain two reasons why the use of twisted pair cable is becoming more common than the use of coax cable?

Which of the following media has the lowest error rates and the highest transmission speeds?

In full-duplex transmission, two stations can send and receive simultaneously.

What is the difference between multiplexing and modulation? Why are each important?

How does analog data differ from digital data?

With nonreturn to zero signaling, the voltage alternates between zero and a positive or negative voltage.

The type of multiplexer that divides the circuit horizontally into different light frequencies that are transmitted simultaneously across many channels is a:

______________ refers to the time it takes for a signal to travel from sender to recipient highly exaggerated with satellite transmission).

What is the typical sampling network in telephony? Why is a higher sampling rate more effective for sound quality?

ASCII is the least popular code for data communications.

Radio data transmission requires that each device has a radio receiver/transmitter and uses a specific frequency.

_________ is the basic physical layout of the circuit.

Coaxial cable costs less and offers less shielding to electrical interference than twisted pair cable.

Which of the following statements is true?

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

Statistical time division multiplexing does not require the capacity of the circuit to be equal to the sum of the combined circuits.

Serial mode transmission is much faster than parallel mode transmission.

Equipment used to transform analog voice signals to digital signals and digital signals to analog signals.

Describe how data could be transmitted using phase modulation.

Microwave transmissions require a line of sight between any two points.

Based on the TIA/EIA 568-B structured cabling standard, the cabling that runs from the telecommunications closet to each work area is called backbone cabling.

Explain two reasons why the use of twisted pair cable is becoming more common than the use of coax cable?

Which of the following media has the lowest error rates and the highest transmission speeds?

In full-duplex transmission, two stations can send and receive simultaneously.

What is the difference between multiplexing and modulation? Why are each important?

How does analog data differ from digital data?

With nonreturn to zero signaling, the voltage alternates between zero and a positive or negative voltage.

The type of multiplexer that divides the circuit horizontally into different light frequencies that are transmitted simultaneously across many channels is a:

______________ refers to the time it takes for a signal to travel from sender to recipient highly exaggerated with satellite transmission).

What is the typical sampling network in telephony? Why is a higher sampling rate more effective for sound quality?

ASCII is the least popular code for data communications.

Radio data transmission requires that each device has a radio receiver/transmitter and uses a specific frequency.

_________ is the basic physical layout of the circuit.

Coaxial cable costs less and offers less shielding to electrical interference than twisted pair cable.

Which of the following statements is true?

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