Question 1

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

Accepted Answer

The answer of Draw a diagram of packet switched service,...

Question 2

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

Accepted Answer

The answer of Compare and contrast frame relay, MPLS and...

Question 3

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

Accepted Answer

A) True 
 B)False

Question 4

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

Accepted Answer

A) True 
 B)False

Question 5

Describe six ways in which a network manager might improve WAN service.

Accepted Answer

The answer of Describe six ways in which a network...

Question 6

An intranet VPN connects different organizations over the Internet.

Accepted Answer

A) True 
 B)False

Question 7

Mesh networks:

Accepted Answer

A) usually provide relatively long routes through the network (compared to ring networks)) 
B) typically contain more circuits in the network than in star or ring networks 
C) do not use decentralized routing 
D) typically are less expensive than ring networks 
E) do not have many possible routes through the network to prevent one circuit from becoming overloaded

Question 8

What are the main benefits of using a VPN?

Accepted Answer

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

Question 9

To connect into a packet switched network, a network terminator is generally used.

Accepted Answer

A) True 
 B)False

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

Question 11

SONET is made up of very high speed dedicated circuits that incorporate inverse multiplexing (IMUX)) for all levels above the OC-1 level.

Accepted Answer

A) True 
 B)False

Question 12

Ethernet services are now being successfully used in WAN environments.

Accepted Answer

A) True 
 B)False

Question 13

OC-3072 has a data rate of

Accepted Answer

A) 159.25 Gbps 
B) 39.813 Gbps 
C) 1.544 Mbps 
D) 100 Mbps 
E) 1.244 Gbps

Question 14

The performance of WANs can be improved by:

Accepted Answer

A) upgrading the circuits between the computers 
B) increasing the demand placed on the network 
C) downgrading the circuits between the computers 
D) downgrading the devices that provide access to the circuits 
E) increasing network traffic

Question 15

The data rate for a T-1 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

Question 16

Describe the three types of VPN.

Accepted Answer

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

Question 17

Which of the following is not a basic architecture for dedicated circuit networks?

Accepted Answer

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

Question 18

Dynamic routing:

Accepted Answer

A) imposes an overhead cost by increasing network traffic 
B) decreases performance in networks which have many possible routes 
C) decreases performance in networks with "bursty" traffic 
D) does not add to the network traffic and should be used in all network environments 
E) is another term for static routing in WANs

Question 19

In a packet switched network, permanent virtual circuits that look very similar to a _____________ (for hardware-based dedicated circuits)) move packets through the network.

Accepted Answer

A) cloud-based ring design 
B) cloak-based mesh design 
C) cloud-based mesh design 
D) common carrier ring design 
E) common carrier bus design

Question 20

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

Exam 9: Wide Area Networks

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

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

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

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

Describe six ways in which a network manager might improve WAN service.

An intranet VPN connects different organizations over the Internet.

Mesh networks:

What are the main benefits of using a VPN?

To connect into a packet switched network, a network terminator is generally used.

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

SONET is made up of very high speed dedicated circuits that incorporate inverse multiplexing (IMUX)) for all levels above the OC-1 level.

Ethernet services are now being successfully used in WAN environments.

OC-3072 has a data rate of

The performance of WANs can be improved by:

The data rate for a T-1 circuit in North America is:

Describe the three types of VPN.

Which of the following is not a basic architecture for dedicated circuit networks?

Dynamic routing:

In a packet switched network, permanent virtual circuits that look very similar to a _____________ (for hardware-based dedicated circuits) ) move packets through the network.

Ethernet/IP packet networks: