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

1. DRAG DROP
Drag the definitions from the left onto the traffic classification on the right. Not all definitions will be used.

2. Refer to the exhibit.

Which statement is correct?

A) This example is a dual-rate policer, and traffic exceeding either the peak or the committed rate will be dropped.
B) This example is a traffic policer, and three token buckets are used to meter the incoming traffic.
C) This example is a dual-bucket policer, and only traffic that exceeds the committed rate will be dropped.
D) This example is a traffic policer, and traffic exceeding the committed rate will be buffered until the congestion is cleared.
E) This example is a percentage-based policer, and the configured percentage is referenced to the input or output queue size.

3. What problem could occur when applying this policy map on CE?
policy-map CE-SP-MODEL class VOIP priority class BROADCAST-VIDEO priority class SP-CRITICAL-DATA bandwidth percent 40 random-detect exp 3 15000 packets 45000 packets class class-default random-detect exp 1 2500 packets 7500 packets random-detect exp 0 1500 packets 10500 packets

A) No bandwidth or policing is configured for voice and video traffic, and other traffic could be impacted.
B) Default class does not have bandwidth assigned.
C) All traffic is classified and treated properly, no issues occur.
D) Only one priority queue is allowed per policy.

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

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

5. A customer reports that during peak hours, FTP performance is unacceptable. Currently, the service provider maps the customer FTP traffic into the class-default traffic class and FTP traffic is marked with MPLS EXP1. The class-default class traffic is configured with MPLS EXP based WRED and also with the bandwidth command. What could be causing the FTP performance issues with the customer?

A) The bandwidth command is causing the FTP issues. It is generally not recommended to use CBWFQ for the class-default traffic class.
B) FTP packets are being more randomly dropped that the other TCP traffic within the class-default traffic class, because the WRED thresholds for MPLS EXP 3 marked packets were configured to improper values.
C) The FTP-type bulk traffic should be mapped to MPLS EXP 5 instead of MPLS EXP 1. The improper marking of FTP packets is causing CBWFQ to assign lower priority for FTP packets within the class-default traffic class.
D) The service provider is using LLQ on all the core links, but the FTP traffic is not is assigned to the priority queue.

Solutions: