Here are the answers to Friday morning's Cisco CCNA and CCNP practice questions. All Friday questions are short answer.

CCNA:

What command displays only the MAC addresses that a switch has dynamically learned?

Answer: show mac-address-table dynamic

CCNP / BSCI:

When an OSPF DROTHER residing on an ethernet segment detects a change in the network, does it notify any other router? If so, which ones? If so, what address(es) does it use to do so?

Answer: A DROTHER will send the changes to 224.0.0.6, the address that both the DR and BDR for that segment are listening to.

CCNP / BCMSN:

What is the exact default mode for ports on a Cisco 2950 switch?

Answer: They're in dynamic desirable mode, actively attempting to form a trunk with a remotely connected device.

CCNP / BCRAN:

What command enables AAA on a Cisco router?

Answer: aaa new-model

CCNP / CIT:

What command results in the following output?

R1#
**** No Global ISDN Switchtype currently defined ****
ISDN BRI0/0 interface
dsl 0, interface ISDN Switchtype = none
Layer 1 Status: DEACTIVATED
Layer 2 Status: Layer 2 NOT Activated
Layer 3 Status: 0 Active Layer 3 Call(s)

Answer: show isdn status

See you shortly with the answers to Friday night's questions!

To your Cisco certification success,

Chris Bryant
CCIE #12933
www.thebryantadvantage.com