Wednesday, September 17, 2008

It's Wednesday, September 17, and here are the answers to yesterday's Cisco practice exam questions!

CCNA Certification And CCENT Certification:

What is the decimal value of the hex character 21Fe?

Just to be sure you're ready for this kind of hex question, I used one more character than most practice exams do. In this case, we have...

2 units of 4096 = 8192

1 unit of 256 = 256

"F" units of 16 = that's 15 units of 16 = 240

"e" units of 1 = that's 14 units of 1 (case doesn't matter) = 14

8192 + 256 + 240 + 14 = 8702

CCNA Security Certification / CCNP ISCW Exam:

Short answer: You've just applied a mirrored VPN configuration to a router. The mirror configuration was created by SDM. What's the one task you must now carry out on that router to have the configuration work?

Answer: Be sure to apply the crypto map to the interface - the mirrored configuration will not include that command.

CCNP Certification / BSCI Exam:

Which of the following is NOT a good scenario for running PIM Sparse Mode?

A. Multicast routers are widely dispersed over the network

B. There are multiple multicast streams at once

C. There are many receivers in each group

D. The multicast traffic will be steady

Answers: C, D. To run PIM Sparse Mode, there should be few receivers in each group, and the multicast traffic itself should be intermittent.

CCNP Certification / BCMSN Exam:

Which of the following statements accurately describes Uplinkfast?

A. Transition from blocking to forwarding takes only a few seconds

B. Cannot be configured on a root switch

C. Is enabled globally rather than a "per-VLAN" basis

D. Good technique for preventing rogue switches from becoming the root bridge of your network

Answer: A, B, C. Uplinkfast really doesn't do much for stopping a rogue switch from becoming your network's root, but the other three statements are accurate.

CCNP / ONT Exam:

Short answer: What's the purpose of a Packet Description Language Module?

Answer: NBAR's capabilities are continually extended through the development of Packet Description Language Modules (PDLM). Not only do these PDLMs allow your NBAR deployment to identify more and more different types of traffic, but a router reload is not necessary, and you don't need a new IOS image.

More questions for you later today, and be sure to check out today's other blog posts for links to new tutorials over on the main site, including a Cisco training video on frame relay switching!

To your success,

Chris Bryant
CCIE #12933

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