Question 1

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 device 
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 device

Question 2

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 above 
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 above

Question 3

An intranet VPN connects different organizations over the Internet.

Accepted Answer

A) True 
 B)False

Question 4

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

Accepted Answer

A) PSTN 
B) FCC 
C) CRTC 
D) CSU 
E) POTS 
A) PSTN 
B) FCC 
C) CRTC 
D) CSU 
E) POTS

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 location 
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 location

Question 6

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

Accepted Answer

A) True 
 B)False

Question 7

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 8

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 Mbps 
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 Mbps

Question 9

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 10

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

Question 11

____________ 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) PUCs 
A) Common carriers 
B) Router manufacturers 
C) Standards organizations 
D) CSUs 
E) PUCs

Question 12

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

Question 13

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) clouds 
A) bursts 
B) cells 
C) tunnels 
D) rings 
E) clouds

Question 14

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

Question 15

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 receiver 
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 receiver

Question 16

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

Accepted Answer

A) True 
 B)False

Question 17

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 Gbps 
A) 1.544 Mbps 
B) 6.312 Mbps 
C) 44.376 Mbps 
D) 274.176 Mbps 
E) 1.544 Gbps

Question 18

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

Accepted Answer

Frame relay, MPLS, and Ethernet service

Question 19

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

Accepted Answer

Packet switching is a method of transmit

Question 20

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

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

A star architecture:

An intranet VPN connects different organizations over the Internet.

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

Which of the following is not a type of VPN?

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

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

Ethernet/IP packet networks:

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

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

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

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

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

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

In a ring design WAN,

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

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

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

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

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

Introduction to Data Communications

Application Layer

Physical Layer

Data Link Layer

Network and Transport Layers

Network Design

Wired and Wireless Local Area Networks

Backbone Networks

The Internet

Network Security

Network Management

Filters

Exam 9: Wide Area Networks

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

A star architecture:

An intranet VPN connects different organizations over the Internet.

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

Which of the following is not a type of VPN?

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

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

Ethernet/IP packet networks:

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

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

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

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

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

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

In a ring design WAN,

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

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

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

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

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

Introduction to Data Communications

Application Layer

Physical Layer

Data Link Layer

Network and Transport Layers

Network Design

Wired and Wireless Local Area Networks

Backbone Networks

The Internet

Network Security

Network Management

Filters