Question 1

Which of the following is not a benefit of packet switched services?

Accepted Answer

A)  The data transmission rates tend to be lower than dial-up or dedicated circuits.
B)  You don't have to set up dedicated circuits between each end point from which you wish to transmit and receive data and/or voice.
C)  You have the flexibility to send data through a temporary circuit between two connections that will be disconnected as soon as the digital transmission is completed.
D)  All circuits are less susceptible to a great deal of noise because they are digital.
E)  You don't have to specify all the interconnecting services you need for your WAN when you buy the service.F) A) and C)
G) B) and D)

Question 2

What are the benefits of IP services over other packet-switched options?

Accepted Answer

IP (Internet Protocol) services offer se...

Question 3

____________ are companies that build a data and telecommunications infrastructure from which other companies can lease services for WANs and MANs.

Accepted Answer

A)  Common carriers
B)  Router manufacturers
C)  Standards organizations
D)  CSUs
E)  PUCsF) A) and E)
G) B) and C)

Question 4

Full mesh design networks are more common than partial mesh design networks.

Accepted Answer

A) True 
 B)False

Question 5

Which of the following is not a type of VPN?

Accepted Answer

A)  intranet VPN
B)  extranet VPN
C)  access VPN
D)  T-1 VPN
E)  a VPN that enables employees to access an organization's network from a remote locationF) B) and D)
G) All of the above

Question 6

SONET:

Accepted Answer

A)  is a standard for optical transmission that currently operates at Terabit per second speeds
B)  is almost identical to the ITU-T standard, synchronous digital hierarchy (SDH) ) 
C)  uses existing copper cabling and the PSTN network
D)  refers to Sprint Overall Network
E)  is not currently available, even in large citiesF) A) and D)
G) C) and E)

Question 7

The _________________ is a United States government agency that regulates voice and data communication.

Accepted Answer

A)  PSTN
B)  FCC
C)  CRTC
D)  CSU
E)  POTSF) A) and B)
G) B) and E)

Question 8

In a ring design WAN,

Accepted Answer

A)  failure in one circuit means that the network can most likely continue to function
B)  failure in one circuit always means that the network will cease to function
C)  failure in one computer always means that the network will cease to function
D)  failure in one circuit means that there will not be any increased traffic delays in the network
E)  failure in one computer always means that messages will stop at that computer since it would be impossible to re-route trafficF) B) and E)
G) A) and C)

Question 9

WANs can connect BNs across distances that can span up to thousands of miles.

Accepted Answer

A) True 
 B)False

Question 10

How does a SVC differ from a PVC?

Accepted Answer

A SVC (Switched Virtual Circuit) and a P...

Question 11

A _______ geometric layout for a WAN connects all computers to one central computer that routes messages to the appropriate computer, usually via a series of point-to-point dedicated circuits.

Accepted Answer

A)  ring design
B)  mesh design
C)  bus design
D)  star design
E)  mesh design.F) D) and E)
G) None of the above

Question 12

______________ are sometimes called private line services.

Accepted Answer

A)   WANs
B)   LANs
C)   Circuit-switched networks
D)   Dedicated-circuit networks
E)  Routed-backbone networksF) A) and B)
G) D) and E)

Question 13

Which of the following is not a way to reduce network demand?

Accepted Answer

A)  shifting network usage from high cost times to lower cost times
B)  using data compression techniques for all data in the network
C)  requiring a network impact statement for all application software developed by the organization
D)  moving data further from the applications and people who use them
E)  shifting network usage from peak to lower demand timesF) B) and E)
G) D) and E)

Question 14

Where does packetizing take place?

Accepted Answer

Packetizing is a process that occurs in ...

Question 15

Packet switched networks enable packets from separate messages or separate organizations to be interleaved for transmission.

Accepted Answer

A) True 
 B)False

Question 16

A dedicated circuit is usually not available late at nights or on weekends.

Accepted Answer

A) True 
 B)False

Question 17

A ________ geometric layout connects all computers in a closed loop, with each computer linked to the next usually with a series of point-to-point dedicated circuits.

Accepted Answer

A)  bus design
B)  star design
C)  full mesh design
D)  ring design
E)  partial mesh designF) B) and D)
G) B) and C)

Question 18

A disadvantage of a star architecture is that the failure of one circuit will disrupt the entire network.

Accepted Answer

A) True 
 B)False

Question 19

A ___________ is a device that permits a customer to connect to a digital T-carrier service.

Accepted Answer

A)  modem
B)  codec
C)  CSU/DSU
D)  NIC
E)  ATMF) B) and C)
G) A) and E)

Question 20

In a ring design WAN,

Accepted Answer

A)  messages can take a long time to travel from the sender to the receiver
B)  a message arrives at all computers on the network simultaneously
C)  messages always arrive faster than in other types of layouts
D)  messages are delivered directly from sender to receiver because there is a point-to-point connection directly between each sender and each receiver
E)  messages always take one second to travel between sender and receiverF) A) and B)
G) All of the above

Exam 9: Wide Area Networks

A _______ geometric layout for a WAN connects all computers to one central computer that routes messages to the appropriate computer, usually via a series of point-to-point dedicated circuits.

Correct AnswerverifiedShow Answer

______________ are sometimes called private line services.

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A dedicated circuit is usually not available late at nights or on weekends.

Correct AnswerverifiedShow Answer

What are the benefits of IP services over other packet-switched options?

Correct AnswerAnswered by ExamLex AIIP (Internet Protocol) services offer se...View AnswerShow Answer

____________ are companies that build a data and telecommunications infrastructure from which other companies can lease services for WANs and MANs.

Correct AnswerverifiedShow Answer

How does a SVC differ from a PVC?

Correct AnswerAnswered by ExamLex AIA SVC (Switched Virtual Circuit) and a P...View AnswerShow Answer

Full mesh design networks are more common than partial mesh design networks.

Correct AnswerverifiedShow Answer

SONET:

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Where does packetizing take place?

Correct AnswerAnswered by ExamLex AIPacketizing is a process that occurs in ...View AnswerShow Answer

The _________________ is a United States government agency that regulates voice and data communication.

Correct AnswerverifiedShow Answer

Which of the following is not a type of VPN?

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A ___________ is a device that permits a customer to connect to a digital T-carrier service.

Correct AnswerverifiedShow Answer

In a ring design WAN,

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Which of the following is not a benefit of packet switched services?

Correct AnswerverifiedShow Answer

A disadvantage of a star architecture is that the failure of one circuit will disrupt the entire network.

Correct AnswerverifiedShow Answer

In a ring design WAN,

Correct AnswerverifiedShow Answer

A ________ geometric layout connects all computers in a closed loop, with each computer linked to the next usually with a series of point-to-point dedicated circuits.

Correct AnswerverifiedShow Answer

WANs can connect BNs across distances that can span up to thousands of miles.

Correct AnswerverifiedShow Answer

Packet switched networks enable packets from separate messages or separate organizations to be interleaved for transmission.

Correct AnswerverifiedShow Answer

Which of the following is not a way to reduce network demand?

Correct AnswerverifiedShow Answer

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IP (Internet Protocol) services offer se...
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A SVC (Switched Virtual Circuit) and a P...
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Packetizing is a process that occurs in ...
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