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

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

2. Which three issues are important challenges for monitoring service quality in the SP core network? (Choose three.)

A) Packets have to traverse many network devices and links that add up to the overall delay.
B) Traffic flows are continuously high.
C) Relatively few tools are available for collecting service quality data.
D) Packets may have to be dropped when a link is congested.
E) Multiple flows compete for a limited amount of bandwidth.

3. When the RFC 3270 Short Pipe mode is used, the PHB at the egress router is based on which of these?

A) The topmost MPLS label EXP value.
B) The packet is re-evaluated, remarked, and the PHB is based on this new marking.
C) The Differentiated Services Field value in the IP packet header.
D) The MPLS VPN label EXP value.

4. When the customer LAN is managed by the service provider and the network is oversubscribed, what is the best location for use of congestion avoidance mechanisms?

A) in the service provider core
B) on output interfaces from the service provider network leading to the customer LAN
C) in interfaces in the service provider network incoming from the customer LAN
D) on output interfaces from the customer LAN leading into the service provider network

5. Refer to the exhibit.

The voice traffic is not receiving the appropriate per-hop behavior at the egress of the CEPE link. What is the problem?

A) The control traffic class should be configured with the priority command instead of the bandwidth command.
B) Instead of hard coding the actual bandwidth on the priority and bandwidth commands, the percent option should be used.
C) Both class maps are misconfigured.
D) Both ACLs are misconfigured.

Solutions: