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

1. Which Cisco IOS XR command will help troubleshoot why a policy map fails to apply on an interface?

A) show policy-map interface tenGigE 0/0/0/0
B) show service-policy interface tenGigE 0/0/0/0
C) show policymgr qos trace all
D) clear qos counters
E) show qos interface tenGigE 0/0/0/0

2. 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) Increase the WRED min threshold value for the traffic class.
C) Enable fair queuing for the BIZ-CRITICAL class.
D) Decrease the queue limit for the traffic class.

3. Where do service providers apply policy when traffic is leaving the customer network? (Choose two.)

A) Apply output policy on the PE interface toward CE, if CE is managed.
B) Apply output policy on the CE interface toward PE, if CE is managed.
C) Apply input policy on the PE interface toward CE, if CE is unmanaged.
D) Apply input policy on the PE interface toward CE, if CE is managed.
E) Apply input policy on the CE interface toward PE, if CE is unmanaged.

4. Which is the preferred queuing method provided by Cisco IOS Software for a converged VoIP network?

A) FIFO
B) CBWFQ
C) WFQ
D) LLQ

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

Solutions: