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Only need to practice for 20 to 30 hours

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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. Which command shows real traffic statistics on each class map on the 10 Gigabit interface 0/10/0/0 at the egress direction?

A) show service-policy interface tenGigE 0/10/0/0 output
B) show policy-map interface tenGigE 0/10/0/0 egress
C) show qos interface tenGigE 0/10/0/0 output
D) show policy-map interface tenGigE 0/10/0/0 output
E) show service-policy interface tenGigE 0/10/0/0 egress
F) show qos interface tenGigE 0/10/0/0 egress

4. Which statement about when you mix TCP and UDP traffic in the same class and overflow occurs is true?

A) Mixing TCP and UDP in the same class is not supported.
B) The overflow is not a problem, because both TCP and UDP packets get randomly dropped and traffic will back out.
C) TCP traffic is starved, because UDP never slows down when packets get dropped.
D) UDP traffic suffers more, because TCP guarantees delivery.

5. An MPLS VPN customer with managed CE services recently made some changes to their call manager configurations. Now the customer reports that their VoIP traffic voice quality is very poor. What could be a cause of the problem?

A) The traffic shaping rate for the VoIP traffic class is too low.
B) The VoIP traffic is being marked as DSCP EF.
C) RTP header compression is used for the VoIP traffic class.
D) The customer changed the codec used for voice compression from G.729 to G.711.
E) The VoIP traffic class is not being policed at the CE router egress.

Solutions: