Thursday, January 22, 2009

Let's catch up a bit on the Cisco exam training questions posted this week! Here are the answers to Monday's questions...

CCNA And CCENT Certification:

Of OSPF, EIGRP, and RIP, name the protocol(s) that each of the following choices describes. (Answers have been placed in parens after each choice.)

A. Uses DUAL for route calculation (EIGRP)

B. Uses Dijkstra algorithm (OSPF)

C. Uses Bellman-Ford (RIP)

D. Will broadcast or multicast routing updates, depending on version (RIP)

E. Uses "successor" and "feasible successors" (EIGRP)

F. Updates contain all known routes, rather than just the routes that have changed (RIP)

CCNA Voice:

What's the basic purpose of Call Admission Control?

Answer: CAC prevents a call from being made if placing the call would result in the degradation of other calls that have already been made.

CCNA Wireless:

What's the main difference between BSS and ESS?

Answer: There are two kinds of infrastructure WLANs. While a Basic Service Set (BSS) will have a single AP, Extended Service Set WLANs (ESS), have multiple access points. An ESS is essentially a series of interconnected BSSes.

CCNP Certification / BSCI Exam:

I'll be the first to say that detecting the reason for SIA routes in EIGRP can be more of an art form than a science. Having said that, give three general reasons a route can go into SIA.

Answer: Reasons that EIGRP routes go stuck-in-active are many, but here are the main ones:
Unidirectional link is preventing query from being answered.
Queried router's CPU is overloaded, preventing a reply.
Queried router's memory is corrupt.
Low-quality link between the two neighbors is allowing Hellos to go through, but replies aren't getting through

CCNP Certification / BCMSN Exam:

Thanks to IEEE 802.3ac, the maximum size of a frame can be extended. But extended to what limit?

Answer: 1522 bytes.

CCNP Certification / ISCW Exam & CCNA Security:

With AAA, the Accounting information that can be recorded falls into six main categories. Name four of them

Answer: Commands, Connection, EXEC, Network, Resource, and System.

More questions and answers later today!

To your success,

Chris Bryant
CCIE #12933

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