Question 1

A WAN with a ring topology can use full or half duplex circuits

Accepted Answer

A) True 
 B)False

Question 2

MPLS operate at layer 4.

Accepted Answer

A) True 
 B)False

Question 3

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

Accepted Answer

A) True 
 B)False

Question 4

Describe the three types of VPN.

Accepted Answer

The answer of Describe the three types of VPN....

Question 5

An OC-1 circuit provides a data rate of 155 Mbps.

Accepted Answer

A) True 
 B)False

Question 6

Mesh networks:

Accepted Answer

A) usually provide relatively long routes through the network compared to ring networks) 
B) require more processing by each computer in the network than in star or ring networks 
C) do not use decentralized routing 
D) do not have much capacity wasted by network status information 
E) do not have many possible routes through the network to prevent one circuit from becoming overloaded

Question 7

Which of the following type of networks permit packets from separate messages to be interleaved?

Accepted Answer

A) circuit switched network 
B) dedicated circuit network 
C) dial up circuit network 
D) packet switched network 
E) Fractional T-1 network

Question 8

A _______________ is a particular type of network that uses circuits that run over the Internet but that appears to the user to be a private network.

Accepted Answer

A) local carrier network 
B) virtual private network 
C) integrated service digital network 
D) software defined network 
E) SONET network

Question 9

VPNs offer high security because they operate through the Internet.

Accepted Answer

A) True 
 B)False

Question 10

What are the main benefits of using a VPN?

Accepted Answer

The answer of What are the main benefits of using...

Question 11

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

Question 12

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

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 and to which you wish to transmit 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

A T1 circuit provides a data rate of 1.544Mbps.

Accepted Answer

A) True 
 B)False

Question 15

Primary rate interface:

Accepted Answer

A) is typically offered only to commercial customers 
B) provides a communications circuit with two 64 Kbps B channels, plus one D channel 
C) is defined exactly the same way in Europe 
D) has an upper capacity of 128Kbps 
E) is comprised of analog circuits only

Question 16

______________ are sometimes called private line services.

Accepted Answer

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

Question 17

SONET:

Accepted Answer

A) is a standard for optical transmission that currently operates at Terabit per second speeds 
B) is very similar to the ITU-T standard, synchronous digital hierarchy 
C) uses inverse multiplexing above the OC-1 level 
D) refers to Sprint Overall Network 
E) is not currently available, even in large cities

Question 18

Full mesh networks are inexpensive.

Accepted Answer

A) True 
 B)False

Question 19

`
T carrier circuits can only be used to transmit voice.

Accepted Answer

A) True 
 B)False

Question 20

Most IP services use _______ as the data link layer protocol.

Accepted Answer

A) Ethernet 
B) TCP 
C) MPLS 
D) IRoute 
E) T1

Exam 9: Wide Area Networks

A WAN with a ring topology can use full or half duplex circuits

MPLS operate at layer 4.

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

Describe the three types of VPN.

An OC-1 circuit provides a data rate of 155 Mbps.

Mesh networks:

Which of the following type of networks permit packets from separate messages to be interleaved?

A _______________ is a particular type of network that uses circuits that run over the Internet but that appears to the user to be a private network.

VPNs offer high security because they operate through the Internet.

What are the main benefits of using a VPN?

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,

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

A T1 circuit provides a data rate of 1.544Mbps.

Primary rate interface:

______________ are sometimes called private line services.

SONET:

Full mesh networks are inexpensive.

` T carrier circuits can only be used to transmit voice.

Most IP services use _______ as the data link layer protocol.