Networking Basics

What does the command routerA(config)#line cons 0 allow you to perform next?

A:

Set the Telnet password.

B:

Shut down the router.

C:

Set your console password.

D:

Disable console connections.

Answer: C

The command line console 0 places you at a prompt where you can then set your console user-mode password.

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

A:

1

B:

2

C:

5

D:

12

Answer: A

By default, switches break up collision domains but are one large broadcast domain.

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How often are BPDUs sent from a layer 2 device?

A:

Never

B:

Every 2 seconds

C:

Every 10 minutes

D:

Every 30 seconds

Answer: B

Every 2 seconds, BPDUs are sent out from all active bridge ports by default.

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Which protocol is used to send a destination network unknown message back to originating hosts?

A:

TCP

B:

ARP

C:

ICMP

D:

BootP

Answer: C

ICMP is the protocol at the Network layer that is used to send messages back to an originating router.

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What does the passive command provide to dynamic routing protocols?

A:

Stops an interface from sending or receiving periodic dynamic updates.

B:

Stops an interface from sending periodic dynamic updates but not from receiving updates.

C:

Stops the router from receiving any dynamic updates.

D:

Stops the router from sending any dynamic updates.

Answer: B

The passive command, short for passive-interface, stops regular updates from being sent out an interface. However, the interface can still receive updates.

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Questions for: Networking Basics