Wednesday, August 27, 2008

It's Wednesday, August 26, and here are the answers to yesterday's Cisco practice exam questions!

CCNA Certification And CCENT Certification:

What command will show you whether the serial interface you specify with the command is a DTE or DCE?

A. show version

B. show controller

C. show frame dte/dce

D. debug version

Answer: B. That information will be near the top of that command's output.

CCNA Security Certification / CCNP ISCW Exam:

Do each of the following terms describe TACACS+, RADIUS, both, or neither? (Answers have been appended to each choice.)

A. encrypts the entire packet - TACACS+ only

B. combines the authentication and authorization processes - RADIUS only

C. supports PAD and ARAP - TACACS+ only

D. cannot control the authorization level of users - TACACS+ only

CCNA Wireless: (That link goes to my new CCNA Wireless Resource Page, with practice exams and tutorials coming soon!)

Do the following statements describe an IBSS, BSS, or ESS? (Answers appended to the original choices.)

A. Multiple access points - ESS

B. Single access point - BSS

C. No access point - IBSS

D. Also called "ad hoc" wireless network - IBSS

CCNA Voice: (That link goes to my CCNA Voice Resource Page)

Short answer: Name three values that the FXS must supply to the FXO.

Answer: Line current, dial tone, and ring voltage.

CCNP Certification / BSCI Exam:

When you use the aggregate-address command to aggregate BGP routes, the more-specific routes will still be seen by the downstream BGP speakers - unless you use what option?





Answer: B. You'll need the summary-only option to prevent the more-specific routes from being advertised.

CCNP Certification / BCMSN Exam:

Short answer: What is the basic purpose of UDLD?

Answer: Most problems involving the physical link will make data transfer in either direction impossible. Particularly with fiber optic, there are situations where a physical layer issue disables data transfer in one direction, but not the other.

UDLD detects these unidirectional links by transmitting a UDLD frame across the link. If a UDLD frame is received in return, that indicates a bidirectional link, and all is well.

If a UDLD frame is not received in return, the link is considered unidirectional. It's really like a Layer 2 ping. If the UDLD "echo" is seen, there's bidirectional communication; if the "echo" is not seen, there isn't!

CCNP / ONT Exam: (My ONT Study Package is now available!)

Short answer: You've selected "1 AP" as your level of rogue AP containment. What exactly does that mean?

Answer: In the WLC, the available options for rogue AP containment are 1 AP, 2 AP, 3 AP, and 4 AP.

If you choose 1 AP, one AP near the rogue AP will send deauthenticate and disassociate messages to the clients that have formed an association with that rogue AP. If you choose 2 AP, two APs will send these messages, and so forth.

More questions for you later today, including several new practice exams for both CCNA and CCNP candidates alike!

Chris Bryant
CCIE #12933

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