Thursday, May 25, 2006

Here are the answers to yesterday's Cisco certification practice questions.

CCNA:

You have just hard-coded a router with the OSPF RID 20.20.20.20. What has to be done to make this change take effect?

A. Nothing, since it's a global configuration command.

B. Reload the router or clear the OSPF process.

C. Delete the OSPF process and reconfigure it.

D. Run the command clear ip ospf rid.

Answer: B. To have this command take effect, you must either reload the router or clear the OSPF process by running the command clear ip ospf process.


CCNP / BSCI:

What is RIP's default behavior regarding which update versions to send and accept?

A. Send version 1 and 2, accept version 1.

B. Send version 1, accept version 1 and 2.

C. Send version 1 and 2, accept version 1 and 2.

D. None of the above.

Answer: B. As you can see in the below output of show ip protocols, the RIP default is to send version 1 updates, but to accept both version 1 and 2 updates.

R1#show ip protocols

Routing Protocol is "rip"
Sending updates every 30 seconds, next due in 23 seconds
Invalid after 180 seconds, hold down 180, flushed after 240
Outgoing update filter list for all interfaces is not set
Incoming update filter list for all interfaces is not set
Redistributing: rip
Default version control: send version 1, receive any version


CCNP / BCMSN:

Can a switch be configured to open an err-disabled port on its own, with no manual intervention?

A. Nice idea, but nope.

B. Yes, with the errdisable recovery command.

C. Yes, by configuring the switch to reboot during off hours.

D. Yes, with the port autoopen command.

Answer: B. This can be done with the errdisable recovery command, which should be followed by the number of seconds the port should remain in errdisabled state.

To your Cisco certification success,

Chris Bryant
CCIE #12933
www.thebryantadvantage.com

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