Welcome! Here are the answers to yesterday's Cisco and CompTIA certification exam practice questions - and ISCW questions are coming next week!

CCNA Exam:

Short answer: A client calls you in an absolute panic. The client made some changes to the running config, saved them with "copy run start", and reloaded the router. The client tells you that the router is asking him something about a "configuration dialogue" instead of totally reloading. What is most likely the problem?

Answer: Most likely, the config register value is 0x2142, which ignores the contents of NVRAM. The startup-config is kept there, so if this is ignored, the router will prompt you to go into setup mode. That's the "configuration dialogue" the client referred to.

Setting the config register back to 0x2102, the default, will allow the startup-config to be properly loaded.


Network+ Certification:

Which topology has a variant called "daisy chaining"?

A. star

B. ring

C. full mesh

D. bus

Answer: D. A type of bus topology is daisy chaining, where each host is connected to two others except the two at the end of the chain - they're connected to only one host.


CCNP Certification / BSCI Exam:

Short answer: What is the net effect of the following configuration?

SHULA(config)#router eigrp 100
SHULA(config-router)#passive-interface default
SHULA(config-router)#no passive-interface serial0

Answer: The command "passive-interface default" makes every interface on the router passive for the routing protocol specified; that is, they can receive routing updates but not send them. Running "no passive-interface serial0" means serial 0 is not passive and can send or receive EIGRP updates.


CCNP Certification / BCMSN Exam:

Identify the true statements regarding RED.

A. High levels of congestion are detected before data is lost.

B. High levels of congestion are detected only when the queue is full.

C. CoS and IP Prec values identify the first packets to be dropped.

D. CoS and IP Prec values are not considered by RED.

Answers: A, D. Random Early Detect (RED) does detect congestion, well, early. :) One drawback of RED is that it does not consider CoS or IP Prec values.

More questions and answers later today!

To your certification exam success,

Chris Bryant
CCIE #12933

http://www.thebryantadvantage.com

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