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

1. A MPLS VPN customer reports poor VoIP call quality across the MPLS VPN. What could be the problem?

A) The total end-to-end delay measured is constantly over 350 msec.
B) The service provider has assigned more than 33% of the interface bandwidth to the priority class.
C) The service provider is using the Short Pipe mode rather than the Uniform mode.
D) All the core links in the service provider network are using LLQ.
E) The service provider is using RTP header compression on the high-speed core links.

2. Which three items are important when monitoring service quality in the SP network? (Choose three.)

A) The typical cause of QoS issues is intermittent failure of network devices and these are inherently difficult to detect.
B) Collection of data to detect QoS issues is slow and labor-intensive.
C) Troubleshooting class map configurations is complex and frequently required.
D) QoS support differs from device to device, depending on underlying hardware platforms and software.
E) QoS issues can be difficult to detect when there is not enough traffic to trigger the configured QoS policy.
F) Establishing alarm thresholds for QoS problems can be complicated.

3. Which three NetFlow versions are supported by Cisco NetFlow Analyzer? (Choose three.)

A) 1
B) 7
C) 6
D) 9
E) 5
F) 8

4. Which statement about the MQC configuration shown here for the class-default traffic class is true?
policy-map CE-EDGE-4CLASS-OC3-POS-1
class class-default
bandwidth percent 25
!

A) The class-default class will use WFQ instead of FIFO queueing.
B) The maximum number of packets the queue for the class-default class can hold is 64 packets using the default queue-limit.
C) This configuration is invalid, because the class-default traffic class does not support the bandwidth command.
D) The bandwidth percent is referenced to the reserved bandwidth on the interface.

5. You work for service provider that employs a four-class service provider QoS model (best effort, bronze, silver, gold). A customer recently reported an issue with high drop rate on a mission-critical database application in the silver class. The silver class is currently at capacity. The gold class is currently only used for voice and video conferencing, and has available bandwidth. The application was remapped to the gold class. Which statements are valid alternative options to this decision? (Choose two.)

A) Moving to a three-class QoS model would allow for more bandwidth per class and would reduce the support of maintaining multiple classes.
B) The provider should consider moving to a six-class QoS model to provide more available classes of service to differentiate traffic.
C) Additional bandwidth should have been added to the silver class from one of the lower classes before the traffic class was moved.
D) In addition to the remapping, the provider would have to change the queue model from WFQ to priority queued.

Solutions: