Welcome! Here are the answers to Thursday's Cisco and CompTIA certification exam practice questions!

CCNA Certification:

Which of the following protocols uses multicasts to send routing updates and hellos?

A. RIPv1

B. RIPv2

C. OSPF

D. EIGRP

E. IGRP

Answers: B, C, D. RIPv2 uses 224.0.0.9, OSPF uses 224.0.0.5, and EIGRP uses 224.0.0.10. Both RIPv1 and IGRP broadcast their routing updates.


A+ Certification:

What network topology consists of multiple PCs connected by a single cable?

A. star

B. line

C. bus

D. hub-and-spoke

Answer: C. A bus topology is multiple PCs and one single connecting cable.


Network+ Certification:

Short answer: Name the three RFC 1918 private address ranges, including their masks.

Answer: Class A, 10.0.0.0 255.0.0.0; Class B, 172.16.0.0 255.240.0.0, Class C, 192.168.0.0 255.255.0.0.


CCNP Certification / BSCI Exam:

Short answer: What protocol or service must be running on a hub-and-spoke network in order to successfully implement On-Demand Routing?

Answer: Cisco Discovery Protocol (CDP) must be running for an ODR deployment to be successful.


CCNP Certification / BCMSN Exam:

Short answer: The following warning is displayed on a Cisco switch when a certain feature is enabled. What feature is it?

%Warning: XXXXXXXX should only be enabled on ports connected to a single host. Connecting hubs, concentrators, switches, bridges, etc... to this interface when XXXXXXXX is enabled, can cause temporary bridging loops. Use with CAUTION.

Answer: That's the warning you get when you configure Portfast. And you should heed that warning!

New Cisco and CompTIA questions coming up later today!

To your success,

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