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CCNP SWITCH Practice Exam:

Switching And Routing Voice Packets

To prepare you for success on the CCNP SWITCH exam, here's a practice exam on multilayer switching and HSRP!

Answers can be found at the bottom of the page.

For plenty of additional CCNP SWITCH exam tutorials, videos, and practice exams, visit my CCNP SWITCH Tutorials page and my YouTube Cisco Certification Video Training page!

Enjoy the questions!

Chris Bryant

CCIE #12999

"The Computer Certification Bulldog"

chris@thebryantadvantage.com

The Only CCNP SWITCH Exam DVD From "The Computer Certification Bulldog" -- Chris Bryant, CCIE #12933.

Question 1:

Approximately what delay does the human ear accept before noticing there's a problem with an audio stream?

A. 1 - 3 seconds

B. 10 - 14 milliseconds

C. 140 - 160 milliseconds

D. None of the above

Question 2:

The term "per-hop behavior" is associated with what QoS model?

A. DiffServ

B. IntServ

C. Best Effort

D. PQ

E. AQ

Question 3:

Identify the true statements regarding Voice VLANs and trunks.

A. 802.1p carries voice traffic in the native voice VLAN.

B. 802.1p carries voice traffic in the voice VLAN the admin creates.

C. 802.1q carries voice traffic in the native voice VLAN.

D. 802.1q carries voice traffic in the VLAN the admin creates.

Question 4:

Cisco recommends that voice and video usage of network bandwidth not exceed what percentage?

Question 5:

For best results, where should marking and classification take place?

A. At the core switch layer.

B. At the distribution switch layer.

C. As close to the data source as possible.

D. As close to the destination as possible.

E. At the access switch layer.

Question 6:

What is the default Voice VLAN used by dot1p?

Question 7:

The term "guaranteed rate service" is generally associated with what QoS model?

A. Best Effort

B. IntServ

C. DiffServ

D. PQ

Answers right after this brief, important message!

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Answers:

1. "C". The human ear will accept between 140 - 160 milliseconds of delay before noticing a problem with an audio stream.

2. "A". DiffServ uses PHB, where forwarding decisions are made on a per-hop basis rather than an entire end-to-end path reserved in advance.

3. "A,D". 802.1p carries voice traffic in the native voice VLAN; 802.1q carries voice traffic in the VLAN assigned as the voice VLAN for that port.

4. Cisco's best practice is to have voice and video traffic not use more than 33% of available bandwidth.

5. "C, E." Marking and classification should take place as close to the source as possible, and that means on an access-layer switch.

6. That's VLAN Zero.

7. "B". Guaranteed Rate Service (GRS) is associated with IntServ.