Networking Basics

How many collision domains are created when you segment a network with a 12-port switch?

A:

1

B:

2

C:

5

D:

12

Answer: D

Layer 2 switching creates individual collision domains.

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What is the main reason the OSI model was created?

A:

To create a layered model larger than the DoD model.

B:

So application developers can change only one layer's protocols at a time.

C:

So different networks could communicate.

D:

So Cisco could use the model.

Answer: C

The primary reason the OSI model was created was so that different networks could inter-operate.

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What does a VLAN do?

A:

Acts as the fastest port to all servers.

B:

Provides multiple collision domains on one switch port.

C:

Breaks up broadcast domains in a layer 2 switch internetwork.

D:

Provides multiple broadcast domains within a single collision domain.

Answer: C

VLANs break up broadcast domains at layer 2.

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Which one of the following is true regarding VLANs?

A:

Two VLANs are configured by default on all Cisco switches.

B:

VLANs only work if you have a complete Cisco switched internetwork. No off-brand switches are allowed.

C:

You should not have more than 10 switches in the same VTP domain.

D:

VTP is used to send VLAN information to switches in a configured VTP domain.

Answer: D

Switches do not propagate VLAN information by default; you must configure the VTP domain. VLAN Trunking Protocol (VTP) is used to propagate VLAN information across a trunk link.

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If your router is facilitating a CSU/DSU, which of the following commands do you need to use to provide the router with a 64000bps serial link?

A:

RouterA(config)#bandwidth 64

B:

RouterA(config-if)#bandwidth 64000

C:

RouterA(config-if)#clock rate 64

D:

RouterA(config-if)#clock rate 64000

Answer: D

The clock rate command is two words, and the speed of the line is in bps.

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Questions for: Networking Basics