Here are the answers to Saturday's second set of Cisco CCNA, CCNP, and CompTIA Network+ exam questions!

CCNA:

Short answer: How many valid host addresses reside on the 32.1.1.0 /29 subnet?

Answer: Six. There are three host bits, so using the formula (2 to the nth power) - 2 to determine the number of valid host bits where n equals the number of host bits, there are six valid IP addresses.

Network+ :

What port number does secure HTTP use?

A. 23

B. 21

C. 22

D. 443

E. 80

F. 114

G. None of the above.

Answer: D. Secure HTTP uses port 443, where "regular" HTTP uses port 80.


CCNP / BSCI:

On a low-speed link, how often will an EIGRP-enabled router send hello packets?

A. Every 5 seconds.

B. Every 15 seconds.

C. Every 60 seconds.

D. Every 90 seconds.

Answer: C. On low-speed links, EIGRP sends a hello packet every 60 seconds. These interfaces include ATM SVCs and multipoint interfaces, Frame Relay multipoint, and ISDN BRI.


CCNP / BCMSN:

A switch has two paths to the root bridge. One is direct, the other goes through another switch. You want to lessen the delay that will occur if the current root port goes down. What Cisco feature can help?

A. Portfast

B. Backbonefast

C. Uplinkfast

D. BPDU Skewing

Answer: C. Uplinkfast can help. When the root port goes down, the currently blocked port will be placed info forwarding mode almost immediately.


CCNP / BCRAN:

Identify the true statements regarding CQ.

A. It has 4 predefined queues.

B. It has 17 predefined queues.

C. All queues can be configured to carry voice and data.

D. At least one queue is reserved for network control traffic.

E. Each queue has a limit of 20 packets by default.

F. Each queue has a limit of 100 packets by default.

G. CQ uses a round-robin transmission scheme.

H. CQ does not use round-robin.

Answer: B, D, E, G. Of CQ's 17 predefined queues, Queue Zero is reserved for network control traffic such as routing protocol Hellos and Syslog messages. CQ uses round-robin transmission, and each queue has a limit of 20 packets.


CCNP / CIT:Which of the following protocols require a seed metric to be set for redistributed routes?

A. RIP

B. ISIS

C. OSPF

D. EIGRP

Answer: A, D. The link state protocols ISIS and OSPF do not require a seed metric to be set, as they already one. ISIS uses a default metric of zero, OSPF a default metric of 20.

See you later today with the answers to Monday's questions!

To your certification exam success,

Chris Bryant
CCIE #12933
www.thebryantadvantage.com

Comments

Anonymous said…
"Short answer: How many valid host addresses reside on the 32.1.1.0 /29 subnet?

Answer: Six"

Umm, correct me if I'm wrong, but shouldn't the answer be 8?

3 binary bits make for 8 possibilities. (or using you 2^3 formula; 2*2 = 4 -> 4*2 = 8)
The formula is (2^n) - 2, which is what I have on the blog - the final (-2) may be hard to see, but it's there. :)

The first and last addresses in the subnet range are considered unusable. The first address in the range is the actual subnet address itself; the final address in the range is the broadcast address for that subnet.

Chris Bryant
CCIE #12933
www.thebryantadvantage.com

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