Question 1

Guided media refers to the type of media in which the message is broadcast through the air.

Accepted Answer

A) True 
 B)False

Question 2

____________ 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 3

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 4

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 5

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

Accepted Answer

Multiplexing and modulation are both imp

Question 6

___________ 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 7

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 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

Fiber optic cable carries signals in traditional electrical form.

Accepted Answer

A) True 
 B)False

Question 10

Which of the following is not an important factor to consider when selecting media to be used in a network?

Accepted Answer

A) prestige value of the type of media 
B) type of network 
C) cost 
D) transmission distance 
E) security 
A) prestige value of the type of media 
B) type of network 
C) cost 
D) transmission distance 
E) security

Question 11

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 12

______ is a modem standard that uses Lempel-Ziv encoding to compress data.

Accepted Answer

A) V.22 
B) V.44 
C) V.32bis 
D) V.34 
E) RS 232 
A) V.22 
B) V.44 
C) V.32bis 
D) V.34 
E) RS 232

Question 13

Time division multiplexing is more efficient that frequency division multiplexing because the guardbands used in the frequency division multiplexing or not needed.

Accepted Answer

A) True 
 B)False

Question 14

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

Accepted Answer

Analog data refers to information that i

Question 15

Two fundamentally different types of data are:

Accepted Answer

A) DSL and ADSL 
B) asymmetric and symmetric 
C) Microsoft and IBM 
D) digital and analog 
E) local area and wide area 
A) DSL and ADSL 
B) asymmetric and symmetric 
C) Microsoft and IBM 
D) digital and analog 
E) local area and wide area

Question 16

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

Accepted Answer

Data transmission can occur in two prima

Question 17

__________ is a line-of-sight type of wireless media.

Accepted Answer

A) coaxial cable 
B) microwave 
C) radio 
D) twisted pair 
E) fiber optic 
A) coaxial cable 
B) microwave 
C) radio 
D) twisted pair 
E) fiber optic

Question 18

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 19

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

Accepted Answer

A) True 
 B)False

Question 20

Which is not true about point-to-point circuits?

Accepted Answer

A) point-to-point circuits are dedicated to the use of the two computers. 
B) point-to-point circuits are more expensive than multipoint circuits. 
C) point-to-point circuits are called dedicated circuits. 
D) point-to-point circuits reduce the amount of cable required and use the circuit more efficiently than multipoint circuits. 
E) point-to-point circuits are used when the computers generate enough traffic to fill the capacity of the communication circuit. 
A) point-to-point circuits are dedicated to the use of the two computers. 
B) point-to-point circuits are more expensive than multipoint circuits. 
C) point-to-point circuits are called dedicated circuits. 
D) point-to-point circuits reduce the amount of cable required and use the circuit more efficiently than multipoint circuits. 
E) point-to-point circuits are used when the computers generate enough traffic to fill the capacity of the communication circuit.

Guided media refers to the type of media in which the message is broadcast through the air.

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

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

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.

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

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

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

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

Fiber optic cable carries signals in traditional electrical form.

Which of the following is not an important factor to consider when selecting media to be used in a network?

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

______ is a modem standard that uses Lempel-Ziv encoding to compress data.

Time division multiplexing is more efficient that frequency division multiplexing because the guardbands used in the frequency division multiplexing or not needed.

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

Two fundamentally different types of data are:

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

__________ is a line-of-sight type of wireless media.

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

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

Which is not true about point-to-point circuits?

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

Guided media refers to the type of media in which the message is broadcast through the air.

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

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

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.

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

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

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

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

Fiber optic cable carries signals in traditional electrical form.

Which of the following is not an important factor to consider when selecting media to be used in a network?

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

______ is a modem standard that uses Lempel-Ziv encoding to compress data.

Time division multiplexing is more efficient that frequency division multiplexing because the guardbands used in the frequency division multiplexing or not needed.

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

Two fundamentally different types of data are:

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

__________ is a line-of-sight type of wireless media.

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

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

Which is not true about point-to-point circuits?

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