Here are the answers to yesterday's Cisco certification exam practice questions!

CCNA:

An EIGRP router has one Successor route to a remote destination, and no Feasible Successor. The Successor route goes down. What happens now?

A. The router holds a DUAL election.

B. The router sends a DUAL query.

C. DUAL will generate a default route to use until the Successor returns.

D. A routing loop will form.

E. A switching loop will form.

Answer: B. The router will send a DUAL query to its EIGRP neighbors, asking if they have a valid route for that particular destination.


CCNP / BSCI:

Short answer: Name the three well-known mandatory BGP attributes.

Answer: AS-Path, next-hop, and origin.


CCNP / BCMSN:

Identify the true statements regarding RED.

A. Congestion is detected early.

B. Congestion is detected only when the queue is full.

C. CoS and IP Precedence values are considered when deciding what packets to drop.

D. CoS and IP Precedence are not considered when deciding what packets should be dropped.

Answers: A, D. RED does detect congestion before the queue is full, but the packet drop is still random - it is, after, all, Random Early Detection!


Fresh questions posted later today!

To your certification exam success,

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