Cisco 642-785

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Cisco 642-785 Exam Syllabus Topics:

Cisco Maintaining Cisco Service Provider Quality of Service (MSPQS) Sample Questions:

Question #1
A customer reports drops for traffic in the BIZ-CRITICAL class. As part of the verification process you identify that there is a high number of random drops. Which of these can help address this problem?

A. Decrease the WRED drop probability denominator for the class.
B. Decrease the queue limit for the traffic class.
C. Enable fair queuing for the BIZ-CRITICAL class.
D. Increase the WRED min threshold value for the traffic class.

Question #2
DRAG DROP
Drag and drop mechanisms on the left to their corresponding uses on the right. Some mechanisms may not used.

Question #3
Refer to the exhibit.

A customer has commented that voice quality is not meeting expectations when calls cross your network. This voice packet was captured from the egress link to the customer. This capture is representative of the customer's voice packets across your network and the queuing method shown is representative of packet treatment across your network. How might the problem be corrected?

A. Set up multiple priority queues to ensure low latency for voice packets.
B. Increase the bandwidth for the voice class.
C. Enable WRED in the CBWFQs to minimize the possibility of dropping voice packets.
D. Ensure that voice packets are correctly marked when they traverse your network.

Question #4
Refer to the exhibit.

The service provider uses a three-class service provider QoS model (real-time, critical, best effort). The provider receives reports from a customer about poor quality on their multimedia conferences. The provider recently updated their profiles to include multimedia conferencing (af41) to their real-time class, which includes voice (ef). What are the two most likely causes of this problem? (Choose two.)

A. The SP-REALTIME class should include mpls experimental 4, not 5.
B. The class map for SP-REALTIME does not include the DSCP values for multimedia conferences and voice traffic.
C. The SP-CRITICAL-DATA class should not use random detect for multimedia traffic.
D. The MPLS experimental 3 is in the SP-CRITICAL-DATA class, not the SP_REALTIME class.
E. Multimedia conferencing is included in the SP-CRITICAL-DATA class.

Question #5
Refer to the exhibit.

The voice traffic is not receiving the appropriate per-hop behavior at the egress of the CEPE link. What is the problem?

A. Both class maps are misconfigured.
B. Instead of hard coding the actual bandwidth on the priority and bandwidth commands, the percent option should be used.
C. Both ACLs are misconfigured.
D. The control traffic class should be configured with the priority command instead of the bandwidth command.

Solutions: