Question 1

Both Wireless LANs (WLANs)  and Wireless WANs (WWANs)  rely on the__________as the communication medium.

Accepted Answer

A)   multiplexer
B)   CIA triangle
C)   controller
D)   radio frequency spectrum
E)   SelectF) B) and D)
G) None of the above

Question 2

Any packet-switching network can handle multimedia data.

Accepted Answer

A) True 
 B)False

Question 3

In a centralized processing system, processing power is distributed among several locations.

Accepted Answer

A) True 
 B)False

Question 4

_____ have the highest bandwidth of any communication medium.

Accepted Answer

A)   Coaxial cables
B)   Fiber-optic cables
C)   Twisted pair copper cables
D)   Ethernet cablesE) A) and C)
F) A) and D)

Question 5

Horizontal scaling of a client/server architecture means _____.

Accepted Answer

A)   migrating the network to decentralized servers
B)   migrating the network to a faster communication media
C)   adding more proxy servers
D)   adding more workstationsE) C) and D)
F) A) and C)

Question 6

In the context of mobile networking, 3G networks have decreased the quality of Internet telephony or Voice over Internet Protocol (VoIP).

Accepted Answer

A) True 
 B)False

Question 7

A__________works well for companies that are geographically dispersed.

Accepted Answer

A)   ring topology
B)   star topology
C)   mesh topology
D)   hierarchical topology
E)   SelectF) B) and D)
G) A) and D)

Question 8

_____ are glass tubes surrounded by concentric layers of glass, called "cladding," to form a light path through wire cables.

Accepted Answer

A)   Twisted pair cables
B)   Copper line cables
C)   Air-spaced coaxial cables
D)   Fiber-optic cablesE) B) and C)
F) A) and D)

Question 9

In the context of data communication, which of the following media is based on "line of sight"?

Accepted Answer

A)   A terrestrial microwave
B)   A mechanical wave
C)   A coaxial cable
D)   A fiber-optic cableE) All of the above
F) A) and B)

Question 10

Which of the following statements is true of the different forms of sender and receiver devices?

Accepted Answer

A)   Thin clients have processing power.
B)   Smart terminals are full-featured computers.
C)   Workstations serve as stand-alone systems.
D)   Netbook computers are high-cost computers with disks.E) B) and D)
F) B) and C)

Question 11

Distributed processing maintains decentralized control and centralized operations.

Accepted Answer

A) True 
 B)False

Question 12

In the context of the technologies developed to improve the efficiency and quality of digital communications, _____ divides each channel into six time slots.

Accepted Answer

A)   Time Division Multiple Access
B)   time of observation
C)   statistical time division multiplexing
D)   Time Slot AllocationE) None of the above
F) A) and B)

Question 13

A ring topology needs more cables to connect the nodes within a network than a star topology.

Accepted Answer

A) True 
 B)False

Question 14

A__________is a collection of binary digits, including message data and control characters for formatting and transmitting, sent from computer to computer over a network.

Accepted Answer

A)   bandwidth
B)   packet
C)   topology
D)   protocol
E)   SelectF) A) and D)
G) All of the above

Question 15

The bus topology connects nodes along a network segment, with the ends connected in a manner similar to a ring topology.

Accepted Answer

A) True 
 B)False

Question 16

Which of the following events takes place in the most basic client/server configuration?

Accepted Answer

A)   The results of a query are sent to the server.
B)   The server sends a request to the client over a network.
C)   The client receives and processes a query.
D)   The user creates a query by running client software.E) B) and D)
F) A) and B)

Question 17

Data communication technologies make Web and video conferencing easier, which can reduce the costs of business travel.

Accepted Answer

A) True 
 B)False

Question 18

Communication media that use an antenna for transmitting data through air or water are called__________.

Accepted Answer

A)   radiated media
B)   conducted media
C)   wired media
D)   guided media
E)   SelectF) B) and D)
G) B) and C)

Question 19

__________is a technique that combines the strongest features of Wired Equivalent Privacy (WEP)  and Extensible Authentication Protocol (EAP)  techniques and helps improve the security of wireless networks.

Accepted Answer

A)   Service Set Identifier
B)   Media access control
C)   Code Division Multiple Access
D)   Wi-Fi Protected Access
E)   SelectF) C) and E)
G) B) and E)

Question 20

In the context of security of wireless networks, which of the following is true of Wired Equivalent Privacy (WEP) ?

Accepted Answer

A)   It is suitable for large networks with high bandwidths.
B)   It is the most secure system for wireless networks.
C)   In WEP, keys are dynamically generated based on the user's ID and password.
D)   In WEP, a key must be entered manually into the access point and the client computer.E) A) and B)
F) C) and D)

Exam 6: Data Communication: Delivering Information Anywhere and Anytime

In the context of security of wireless networks, which of the following is true of Wired Equivalent Privacy (WEP) ?

Correct AnswerverifiedShow Answer

In the context of mobile networking, 3G networks have decreased the quality of Internet telephony or Voice over Internet Protocol (VoIP).

Correct AnswerverifiedShow Answer

Any packet-switching network can handle multimedia data.

Correct AnswerverifiedShow Answer

In the context of data communication, which of the following media is based on "line of sight"?

Correct AnswerverifiedShow Answer

In a centralized processing system, processing power is distributed among several locations.

Correct AnswerverifiedShow Answer

Data communication technologies make Web and video conferencing easier, which can reduce the costs of business travel.

Correct AnswerverifiedShow Answer

__________is a technique that combines the strongest features of Wired Equivalent Privacy (WEP) and Extensible Authentication Protocol (EAP) techniques and helps improve the security of wireless networks.

Correct AnswerverifiedShow Answer

_____ have the highest bandwidth of any communication medium.

Correct AnswerverifiedShow Answer

Communication media that use an antenna for transmitting data through air or water are called__________.

Correct AnswerverifiedShow Answer

Both Wireless LANs (WLANs) and Wireless WANs (WWANs) rely on the__________as the communication medium.

Correct AnswerverifiedShow Answer

Horizontal scaling of a client/server architecture means _____.

Correct AnswerverifiedShow Answer

Which of the following statements is true of the different forms of sender and receiver devices?

Correct AnswerverifiedShow Answer

In the context of the technologies developed to improve the efficiency and quality of digital communications, _____ divides each channel into six time slots.

Correct AnswerverifiedShow Answer

A__________is a collection of binary digits, including message data and control characters for formatting and transmitting, sent from computer to computer over a network.

Correct AnswerverifiedShow Answer

A__________works well for companies that are geographically dispersed.

Correct AnswerverifiedShow Answer

Distributed processing maintains decentralized control and centralized operations.

Correct AnswerverifiedShow Answer

A ring topology needs more cables to connect the nodes within a network than a star topology.

Correct AnswerverifiedShow Answer

Which of the following events takes place in the most basic client/server configuration?

Correct AnswerverifiedShow Answer

The bus topology connects nodes along a network segment, with the ends connected in a manner similar to a ring topology.

Correct AnswerverifiedShow Answer

_____ are glass tubes surrounded by concentric layers of glass, called "cladding," to form a light path through wire cables.

Correct AnswerverifiedShow Answer

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