Friday, February 01, 2008

Here are the answers to the free Cisco and CompTIA questions from Wednesday, February 30!

CCENT / Network+ Certification:

Does Layer 2 of the OSI model perform error detection, error correction, both, or neither?

Answer: The Data Link layer is capable of error detection, but not error correction.

Security+ Certification:

Briefly describe the purpose of a "SYN cookie".

Answer: One defense against SYN attacks, a SYN cookie verifies the client address before actually allocating resources to that client.

CCNA Certification:

What type of OSPF router is defined as "at least one interface in Area 0, and connecting other areas to Area 0"?



C. Internal

D. Backbone

E. External

Answer: B. That's the textbook definition of an Area Border Router (ABR).

CCNP Certification / BSCI Exam:

What term is used for the number "2" shown in the below commands?

R2(config)#router rip
R2(config-router)#redistribute ospf 1 metric 2

A. distance

B. administrative distance

C. distance

D. variance

E. seed metric

F. process number

Answer: E. The "2" is the seed metric. The "1" in the redistribute statement is the OSPF process number whose routes are being redistributed into RIP.

CCNP Certification / BCMSN Exam:

In a typical Network Management block, what switch layers are represented?

A. Access

B. Distribution

C. Core

Answers: A, B. In addition to network management devices, both Access and Distribution switches will be found here.

New questions, a new free CCNA 640-802 tutorial, and a new Networking Troubleshooting Challenge to come later today!

To your success,

Chris Bryant
CCIE #12933

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