Question 1

A switched backbone uses a bus topology

Accepted Answer

A) True 
 B)False

Question 2

Network demand will not be reduced by:

Accepted Answer

A)  restricting or moving)  applications such as desktop videoconferencing
B)  using network devices to ensure that broadcast messages do not go to other networks
C)  encouraging the use of applications such as medical imaging
D)  sending status information to all computers on all LANs in the backbone network
E)  restricting or moving)  applications such as multimedia

Question 3

Which of the following is a fundamental backbone network architecture?

Accepted Answer

A)  Bridged backbone
B)  Virtual LAN
C)  Hubbed backbone
D)  Gatewayed backbone
E)  Virtual backbone

Question 4

The cable to connect BNs is usually twisted pair.

Accepted Answer

A) True 
 B)False

Question 5

_________ move packets along the backbone based on their network layer address.

Accepted Answer

A)  Bridged backbones
B)  Hubbed backbones
C)  Multistation access unit backbones
D)  Routed backbones
E)  NIC backbones

Question 6

Which of the following is not a type of hardware device that can be used to interconnect networks?

Accepted Answer

A)  layer 3 switches
B)  routers
C)  dumb terminals
D)  layer 2 switches
E)  all of the above can be used

Question 7

Circuit capacity on a backbone network will not be improved by:

Accepted Answer

A)  going from 100Base-T Ethernet to 10Base-T Ethernet
B)  going from 100Base-T Ethernet to gigabit Ethernet
C)  adding additional circuits alongside heavily used ones
D)  replacing a shared circuit backbone with a switched circuit backbone
E)  providing a faster circuit to the server

Question 8

Which of the following is not true about switched backbones?

Accepted Answer

A)  network latency delay)  is decreased in comparison to traditional bridged or routed)  backbone networks
B)  each connection into the switch is a separate point-to-point circuit which supports simultaneous access by the LANs connected to the switch
C)  there are many more networking devices in a switched backbone network compared to the number of LANs attaching to it
D)  use a star topology
E)  the backbone essentially exists in the switch; there is no backbone cable

Question 9

Which of the following is not true about Layer-3 switches?

Accepted Answer

A)  They switch messages based on their IP address.
B)  They can be used in place of routers.
C)  They function faster than routers.
D)  They have more simultaneously active ports than routers.
E)  They can only switch messages based on their data link layer addresses.

Question 10

A subnetted or hierarchical backbone can also be called:

Accepted Answer

A)  Bridged backbone
B)  Virtual LAN
C)  Hubbed backbone
D)  Collapsed backbone
E)  Routed backbone

Question 11

One basic component of a backbone network is the hardware device that connects other networks to the backbone.

Accepted Answer

A) True 
 B)False

Question 12

Two primary disadvantages to the ______ BN type are that the routers in the network impose time delays, and routers are typically more expensive and require more management than switches.

Accepted Answer

A)  bridged backbone
B)  virtual LAN
C)  hubbed backbone
D)  collapsed backbone
E)  routed backbone

Question 13

A VLAN requires the computer manager to reconfigure the physical cables to the switch if a computer is moved from one port to another port on a switch.

Accepted Answer

A) True 
 B)False

Question 14

Devices in a rack are connected together using ___________.

Accepted Answer

A)  patch cables
B)  string
C)  servers
D)  modules
E)  chassis switches

Question 15

Backbone networks typically use lower speed circuits to interconnect a series of LANs and provide connections to other backbone networks.

Accepted Answer

A) True 
 B)False

Question 16

Which of the following is not a way that a router differs from a switch?

Accepted Answer

A)  routers can connect two or more networks that use the same data link protocol
B)  routers only process messages that are specifically addressed to it
C)  routers operate at the network layer
D)  routers perform more processing on each message than switches do
E)  routers can choose the "best" route between networks for forwarding a packet

Question 17

Device performance on a backbone network will not be improved by:

Accepted Answer

A)  using the same protocols in the backbone and the LANs
B)  using static routing in low to moderate traffic conditions
C)  ensuring that backbone devices have sufficient memory so that packets do not have to be retransmitted by the sender
D)  translating packets from one protocol to another as they enter the BN
E)  none of the options

Question 18

A VLAN network assigns computers to LAN segments by hardware.

Accepted Answer

A) True 
 B)False

Question 19

The _______ is the part of the backbone that connects the LANs together.

Accepted Answer

A)  Access layer
B)  Distribution layer
C)  Core layer
D)  Privacy layer
E)  Switched layer

Question 20

A room that contains a rack of equipment for a rack-based collapsed backbone is also called the main distribution facility MDF) or central distribution facility CDF).

Accepted Answer

A) True 
 B)False

Exam 8: Backbone Networks

Device performance on a backbone network will not be improved by:

Correct AnswerverifiedShow Answer

A VLAN network assigns computers to LAN segments by hardware.

Correct AnswerverifiedShow Answer

Which of the following is not true about switched backbones?

Correct AnswerverifiedShow Answer

Network demand will not be reduced by:

Correct AnswerverifiedShow Answer

A room that contains a rack of equipment for a rack-based collapsed backbone is also called the main distribution facility MDF) or central distribution facility CDF).

Correct AnswerverifiedShow Answer

Circuit capacity on a backbone network will not be improved by:

Correct AnswerverifiedShow Answer

Which of the following is a fundamental backbone network architecture?

Correct AnswerverifiedShow Answer

A VLAN requires the computer manager to reconfigure the physical cables to the switch if a computer is moved from one port to another port on a switch.

Correct AnswerverifiedShow Answer

Which of the following is not true about Layer-3 switches?

Correct AnswerverifiedShow Answer

Two primary disadvantages to the ______ BN type are that the routers in the network impose time delays, and routers are typically more expensive and require more management than switches.

Correct AnswerverifiedShow Answer

Devices in a rack are connected together using ___________.

Correct AnswerverifiedShow Answer

A subnetted or hierarchical backbone can also be called:

Correct AnswerverifiedShow Answer

Which of the following is not a way that a router differs from a switch?

Correct AnswerverifiedShow Answer

A switched backbone uses a bus topology

Correct AnswerverifiedShow Answer

Which of the following is not a type of hardware device that can be used to interconnect networks?

Correct AnswerverifiedShow Answer

The _______ is the part of the backbone that connects the LANs together.

Correct AnswerverifiedShow Answer

One basic component of a backbone network is the hardware device that connects other networks to the backbone.

Correct AnswerverifiedShow Answer

_________ move packets along the backbone based on their network layer address.

Correct AnswerverifiedShow Answer

The cable to connect BNs is usually twisted pair.

Correct AnswerverifiedShow Answer

Backbone networks typically use lower speed circuits to interconnect a series of LANs and provide connections to other backbone networks.

Correct AnswerverifiedShow Answer

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