Question 1

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

Accepted Answer

A) True 
 B)False

Question 2

Where does packetizing take place?

Accepted Answer

Packetizing is a process that occurs in

Question 3

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

Question 4

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 traffic 
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 traffic

Question 5

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

Accepted Answer

A) True 
 B)False

Question 6

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) ATM 
A) modem 
B) codec 
C) CSU/DSU 
D) NIC 
E) ATM

Question 7

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

Accepted Answer

A) True 
 B)False

Question 8

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

Accepted Answer

A) True 
 B)False

Question 9

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

Accepted Answer

IP (Internet Protocol) services offer se

Question 10

____________ 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 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. 
A) ring design 
B) mesh design 
C) bus design 
D) star design 
E) mesh design.

Question 12

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 times 
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 times

Question 13

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. 
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.

Question 14

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 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

The _________________ is a United States 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 17

How does a SVC differ from a PVC?

Accepted Answer

A SVC (Switched Virtual Circuit) and a P

Question 18

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 cities 
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 cities

Question 19

______________ are sometimes called private line services.

Accepted Answer

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

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 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

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

Where does packetizing take place?

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.

In a ring design WAN,

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

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

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

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

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

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

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.

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

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

Which of the following is not a type of VPN?

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

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

How does a SVC differ from a PVC?

SONET:

______________ are sometimes called private line services.

In a ring design WAN,

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

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

Where does packetizing take place?

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.

In a ring design WAN,

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

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

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

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

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

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

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.

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

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

Which of the following is not a type of VPN?

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

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

How does a SVC differ from a PVC?

SONET:

______________ are sometimes called private line services.

In a ring design WAN,

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