Welcome back! Here are the answers to yesterday's Cisco practice questions!

CCNA:

Short answer: Of the five major network classes, how many can be assigned for public use? Which ones are they?

Answer: Class A, B, and C addresses can be assigned to public hosts. Class D addresses are reserved for multicasting, while Class E is reserved for future use.


CCNP / BCSI:

Four routers are competing to be the OSPF DR on an Ethernet segment. The highest IP address on each router is listed. Which of the following routers will win?

A. R1, loopback0, 100.1.1.1 /24

B. R2, loopback0, 200.1.1.2 /20

C. R3, ethernet0, 210.1.1.1 /15

D. R4, serial 0.123 multipoint, 220.1.1.1 /30

Answer: B. The router with the highest IP address on a loopback interface will become the DR - regardless of whether the loopback interface is OSPF-enabled.


CCNP / BCMSN:

It's acceptable to configure Portfast on ports leading to what network devices?

A. Any device

B. Any host

C. Any switch

D. Any router

Answer: B. Portfast is only acceptable to configure on ports leading to host devices, such as a PC.


More questions and answers later today, along with new tutorials - only from The Bryant Advantage!

To your success in 2007,

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