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

1. DRAG DROP
Drag and drop mechanisms on the left to their corresponding uses on the right. Some mechanisms may not used.

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

3. 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 qos interface tenGigE 0/0/0/0
C) show policymgr qos trace all
D) clear qos counters
E) show service-policy interface tenGigE 0/0/0/0

4. Refer to the exhibit.

A provider uses the recommended mappings for DSCP to MPLS EXP. Several sites connected to the same PE router report that critical data has been experiencing a high number of drops. The customer marks its CRITICAL data as AF31. What appears to be the problem?

A) If the data receiving drops is high priority, it should be marked with MPLS EXP value 7.
B) The provider is using the recommended mappings for DSCP to MPLS EXP, so the CLASS-MAP for the CRITICAL-DATA should contain EXP value of 4.
C) The recommended mapping for AF31 is to MPLS EXP 5, which is classified in the REALTIME class, not the CRITICAL DATA class.
D) The classification for CRITICAL-DATA should contain a match-all, not a match-any.
E) The allocated bandwidth for CRITICAL-DATA should be increased to provide sufficient bandwidth to support the application.

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

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

Solutions: