Thursday, May 24, 2007

Welcome back! Here are the answers to Wednesday's Cisco certification practice questions!

CCNA Certification:

Short answer: The binary string 11010101, converted to hex, equals ____________ .

Answer: That string converts to the decimal 213, which converts to the hex value D5, or d5.

CCNP Certification / BSCI Exam:

Short answer: What LSA type is generated by an ABR and describe inter-area links?

Answer: Type 3 LSAs are generated by ABRs and describe inter-area routes.

CCNP Certification / BCMSN Exam:

While visiting a client's network, you notice that VLAN 25 is configured as the native VLAN. No hosts are actually in VLAN 25, though. What kind of network attack does this guard against?

Answer: This is one method of preventing VLAN hopping, specifically a double tagging attack.

CCNP Certification / ONT Exam:

Which of the following QoS models uses PHB?

A. Integrated Services

B. Differentiated Services

C. Distributed Services

D. Best Effort Delivery

Answer: B. Differentiated Services uses Per-Hop Behavior (PHB), rather than create a reserved path in advance of transmission, as Integrated Services does.

CCNP Certification / ISCW Exam:

Identify the true statements.

A. A CLI session is 10 minutes by default.

B. A CLI session is 20 minutes by default.

C. A CLI session has no default length.

D. A CLI session's duration can be changed.

E. A CLI session's duration is fixed in length and cannot be changed.

Answers: A, D. A CLI session is 10 minutes by default and can be changed with the exec-timeout command.

New questions later today!

To your certification exam success,

Chris Bryant
CCIE #12933

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