Thursday, August 16, 2007

Here are the answers to Wednesday's Cisco certification training questions!

CCNA Certification:

EIGRP is considered a hybrid protocol. Briefly describe why.

Answer: EIGRP has some characteristics that are typical of distance vector protocols, and other characteristics typical of link-state protocols, which is why it's often referred to as a "hybrid" of those two protocol types.


CCNP Certification / BSCI Exam:

Briefly describe the types of OSPF routes that can be found on a router serving as a total stub router, but not as an ASBR or ABR.

Answer: The routing table of a total stub router can contain intra-area routes (O) and a default inter-area route using the ABR as the next hop.

A typical total stub routing table:

R4#show ip route ospf

O*IA 0.0.0.0/0 [110/11] via 172.34.34.3, 00:07:26, Ethernet0


CCNP Certification / BCMSN Exam:

Identify the true statements:

A. ISL encapsulates all frames before sending them across the trunk.

B. ISL encapsulates all frames before sending them across the trunk, except those belonging to the native VLAN.

C. IEEE 802.1Q encapsulates all frames before sending them across the trunk.

D. IEEE 802.1Q encapsulates all frames before sending them across the trunk, except those belonging to the native VLAN.

E. None of these statements are true.

Answer: A. The Cisco-proprietary trunking protocol ISL does encapsulate all frames before sending them across the trunk. C and D are false because IEEE 802.1Q does not encapsulate frames at all.


CCNP Certification / ONT Exam:

In the command "fair-queue 200 128 50", what does the 200 represent?

A. The number of dynamic conversation queues.

B. The bandwidth assigned to interactive conversations.

C. The number of reservable conversation queues.

D. The number of packets that can be held in a single queue.


Answer: D. In this command, "200" is the number of packets that can be held in a single queue."128" is the number of dynamic conversation queues, and "50" is the number of reservable conversation queues.

New questions posted later today!

To your success,

Chris Bryant
CCIE #12933
http://www.thebryantadvantage.com/

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