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block

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

Select the correct answer(s).  

(0/0)

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b. They can be used in place of routers.

a. They switch messages based on their IP address.

c. They function faster than routers.

e. They can only switch messages based on their data link layer addresses.

d. They have more simultaneously active ports than routers.

none

Routers:

Select the correct answer(s).  

(0/0)

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c. use data link layer addresses to move packets that leave the subnet

a. require more management than switches

b. are not susceptible to time delays

d. require only a few set of TCP/IP addresses

e. don’ t need much time to establish separate subnet addresses for each LAN

none

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

Select the correct answer(s).  

(0/0)

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c. Multistation access unit backbones

b. Hubbed backbones

e. NIC backbones

a. Bridged backbones

d. Routed backbones

none

Which of the following is not a technology layer that is considered when designing backbone networks?

Select the correct answer(s).  

(0/0)

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e. none of the options

a. access layer

d. core layer

b. distribution layer

c. decentralized layer

none

A _____________ type of BN segments (each of which has a special set of subnet addresses that can be managed by different network managers) each part of the network connected to the backbone.

Select the correct answer(s).  

(0/0)

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a. bridged backbone

e. routed backbone

c. hubbed backbone

d. collapsed backbone

b. virtual LAN

none

A __________ type of BN has a star topology with one device, such as a switch, at its center.

Select the correct answer(s).  

(0/0)

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d. Switched backbone

e. Routed backbone

c. Hubbed backbone

b. Virtual LAN

a. Bridged backbone

none

Which of the following is not true about backbone networks?

Select the correct answer(s).  

(0/0)

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e. They tend to use lower speed circuits than LANs.

c. They typically provide connections to other BNs, WANs, MANs, and the Internet.

a. They may also be called enterprise networks if they connect all networks within an organization.

b. They typically connect many networks, including LANs.

d. They may also be called campus networks if they connect many BNs spanning several buildings as a single location.

none

Switched backbone networks:

Select the correct answer(s).  

(0/0)

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c. use a star topology with one device, usually a switch

d. have a great deal of cable in their backbones

b. are the least common type of BN used in one building

e. tend to have less cable, but more network devices

a. always use a ring topology

none

Switches:

Select the correct answer(s).  

(0/0)

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d. connect two or more network segments that use different network protocols

b. operate at the physical layer only

e. have become more popular than layer 2 switches

c. connect two ore more network segments that use different data link protocols

a. learn addresses by reading the source and destination addresses

none

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

Select the correct answer(s).  

(0/0)

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b. routers

c. dumb terminals

d. layer 2 switches

e. all of the above can be used

a. layer 3 switches

none

Which of the following is a fundamental backbone network architecture?

Select the correct answer(s).  

(0/0)

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d. Gatewayed backbone

e. Virtual backbone

b. Virtual LAN

a. Bridged backbone

c. Hubbed backbone

none

Routers:

Select the correct answer(s).  

(0/0)

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b. operate only at the physical layer

e. operate only at the data link layer

c. cannot connect two or more networks that use the same type of cable

d. may also be called TCP/IP gateways

a. operate at the application layer

none

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

Select the correct answer(s).  

(0/0)

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d. routers perform more processing on each message than switch

a. routers can connect two or more networks that use the same data link protocol

e. routers can choose the “ best” route between networks for forwarding a packet

c. routers operate at the network layer

b. routers only process messages that are specifically addressed to it

none

A subnetted or hierarchical backbone can also be called:

Select the correct answer(s).  

(0/0)

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e. Routed backbone

d. Collapsed backbone

c. Hubbed backbone

a. Bridged backbone

b. Virtual LAN

none

_________ have no backbone cable.

Select the correct answer(s).  

(0/0)

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c. Hubbed backbones

b. Cloud routed backbones

e. Multistation access unit backbones

a. Switched backbones

d. Bridged backbones