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

1. Refer to the exhibit.

A service provider moved from a three-class service provider QoS model to a four-class service provider QoS model. A new class of service called CRITICAL-B was created to support traffic with a DSCP marking of AF31. A customer reports that the traffic in the CRITICAL-B class is having problems. What step should the service provider take to correct this issue?

A) The class map for CRITICAL-B should have a DSCP value of 28.
B) The CRITICAL-A class should change from match-all to match-any.
C) The policy map should be updated to move the BULK class to the bottom of the policy.
D) The max-reserved-bandwidth command must be used to allocate more bandwidth than allowed by default.

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

3. What would be the first step when defining an MQC?

A) Define a traffic class by using the class-map command.
B) Apply the commands such as bandwidth, police, and set dscp to enable the QoS feature.
C) Add one or more match commands to classify packets.
D) Create a traffic policy by using the policy-map command.
E) Attach the traffic policy (policy map) to the interface by using the service-policy command.

4. To classify and prioritize traffic according to importance, which three statements are correct? (Choose three.)

A) Email should be placed in a best-effort class.
B) Video should be placed in the same class as voice.
C) Voice traffic should be given top priority.
D) Each class should be guaranteed at least some bandwidth.
E) Critical applications should be given sufficient bandwidth to meet their requirements.

5. What are three fundamental QoS mechanisms? (Choose three.)

A) marking
B) congestion avoidance
C) congestion handling
D) undersubscription
E) policing

Solutions: