Welcome! Blogger had a bit of a headache yesterday, so no questions were posted yesterday. Here are the answers to Saturday's Cisco certification exam practice questions....

CCNA Certification:

R1 and R3 are directly connected via a DTE/DCE cable, both routers using interface serial1. What additional command is needed to make the line protocol come up?

A. On the DTE, configure "clockrate 56000".

B. On the DCE, configure "clockrate 56000".

C. On the DTE, configure "clockrate 56".

D. On the DCE, configure "clockrate 56".

Answer: B. On the DCE's serial interface, configure clockrate 56000, not clockrate 56. Use the show controller serial x command to find out which interface is the DCE.


CCNP Certification / BSCI Exam:

Short answer: After route summarization is configured, the router on which summarization is configured will have an extra route. To what interface or destination does this new route point?

Answer: The new route points to the Null0 interface. This is a routing loop prevention feature.


CCNP Certification / BCMSN Exam:

How many bytes are added to a frame as a result of ISL encapsulation?

A. 15 bytes

B. 25 bytes

C. 30 bytes

D. 35 bytes

E. 40 bytes

Answer: C. 30 bytes overall are added to the frame in the form of a 26-byte header and a 4-byte trailer containing the CRC.

See you later today with a new batch of questions, including ISCW and ONT questions for you CCNP candidates!

To your success,

Chris Bryant
CCIE #12933
http://www.thebryantadvantage.com