Question 1

Ethernet/IP packet networks:

Accepted Answer

A)  are supported with gigabit fiber optic networks in large cities
B)  are offered only by the common carriers
C)  use token ring layer 2 media access control
D)  use IPX/SPX protocols
E)  provide CIR up to a maximum of 1.544 MbpsF) C) and D)
G) B) and E)

Question 2

With a virtual private network, users create permanent virtual circuits through the Internet called:

Accepted Answer

A)  bursts
B)  cells
C)  tunnels
D)  rings
E)  cloudsF) A) and B)
G) C) and D)

Question 3

Today, a common carrier that provides long distance services is typically called a local exchange carrier.

Accepted Answer

A) True 
 B)False

Question 4

Draw a diagram of packet switched service, and describe packet switching concepts.

Accepted Answer

Packet switching is a method of transmit...

Question 5

Using a chart format, list, define and briefly describe two dedicated circuit services and two packet switched services.

Accepted Answer

Dedicated Circuit Services:
1. T1 Line: ...

Question 6

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) A) and B)
G) B) and E)

Question 7

____________ 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) B) and E)
G) A) and C)

Question 8

Compare the ring, star, and mesh architectures.Provide one example of when each one might be better to use compared to the others.

Accepted Answer

The ring, star, and mesh architectures a...

Question 9

An intranet VPN connects different organizations over the Internet.

Accepted Answer

A) True 
 B)False

Question 10

A _________ is a connection-oriented approach to sending packets on a packet switched service.

Accepted Answer

A)  permanent virtual circuit
B)  datagram
C)  histogram
D)  bursty packet
E)  fractional T-1 networkF) A) and C)
G) A) and B)

Question 11

The data rate for a T-3 circuit in North America is:

Accepted Answer

A)  1.544 Mbps
B)  6.312 Mbps
C)  44.376 Mbps
D)  274.176 Mbps
E)  1.544 GbpsF) A) and D)
G) All of the above

Question 12

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

Accepted Answer

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

Question 13

Common carriers sell or lease communication services and facilities to the public.

Accepted Answer

A) True 
 B)False

Question 14

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) A) and C)

Question 15

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 16

Which of the following is a primary advantage of a VPN?

Accepted Answer

A)  low cost
B)  inflexibility
C)  unpredictable traffic congestion
D)  security
E)  complexity to the userF) A) and B)
G) A) and C)

Question 17

A _____________ is a user's connection into a packet switched service.

Accepted Answer

A)  packet analog/digital device
B)  packet asynchronous/discrete device
C)  packet asymmetric/data transmission device
D)  packet assembly/disassembly device
E)  packet analyzer/decoder deviceF) None of the above
G) C) and D)

Question 18

A star architecture:

Accepted Answer

A)  connects all computers in a closed loop
B)  connects all computers off a backbone circuit
C)  connects all computers to one central computer that routes messages to the appropriate computer
D)  all of the above
E)  none of the aboveF) A) and B)
G) D) and E)

Question 19

In ______ geometric layout for a network, every computer is connected to every other computer often by point-to-point dedicated circuits.

Accepted Answer

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

Question 20

Compare and contrast frame relay, MPLS and Ethernet service networks.

Accepted Answer

Frame relay, MPLS, and Ethernet service ...

Exam 9: Wide Area Networks

The data rate for a T-3 circuit in North America is:

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following is not a type of VPN?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

An intranet VPN connects different organizations over the Internet.

Correct AnswerverifiedShow Answer

In a ring design WAN,

Correct AnswerverifiedShow Answer

Draw a diagram of packet switched service, and describe packet switching concepts.

Correct AnswerAnswered by ExamLex AIPacket switching is a method of transmit...View AnswerShow Answer

A _____________ is a user's connection into a packet switched service.

Correct AnswerverifiedShow Answer

With a virtual private network, users create permanent virtual circuits through the Internet called:

Correct AnswerverifiedShow Answer

Using a chart format, list, define and briefly describe two dedicated circuit services and two packet switched services.

Correct AnswerAnswered by ExamLex AIDedicated Circuit Services:1. T1 Line: ...View AnswerShow Answer

Which of the following is a primary advantage of a VPN?

Correct AnswerverifiedShow Answer

Common carriers sell or lease communication services and facilities to the public.

Correct AnswerverifiedShow Answer

A _________ is a connection-oriented approach to sending packets on a packet switched service.

Correct AnswerverifiedShow Answer

Today, a common carrier that provides long distance services is typically called a local exchange carrier.

Correct AnswerverifiedShow Answer

Compare the ring, star, and mesh architectures.Provide one example of when each one might be better to use compared to the others.

Correct AnswerAnswered by ExamLex AIThe ring, star, and mesh architectures a...View AnswerShow Answer

In ______ geometric layout for a network, every computer is connected to every other computer often by point-to-point dedicated circuits.

Correct AnswerverifiedShow Answer

A star architecture:

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Compare and contrast frame relay, MPLS and Ethernet service networks.

Correct AnswerAnswered by ExamLex AIFrame relay, MPLS, and Ethernet service ...View AnswerShow Answer

Ethernet/IP packet networks:

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Packet switching is a method of transmit...
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Dedicated Circuit Services:
1. T1 Line: ...
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The ring, star, and mesh architectures a...
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Answered by ExamLex AI
Frame relay, MPLS, and Ethernet service ...
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