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

1. 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 topmost MPLS label EXP value.
C) The MPLS VPN label EXP value.
D) The packet is re-evaluated, remarked, and the PHB is based on this new marking.

2. Which Cisco IOS XR Software command clears the service-policy counters on the 10 Gigabit interface 0/0/0/0 at the ingress direction?

A) clear service-policy counters tenGigE 0/0/0/0 input
B) clear qos counters tenGigE 0/0/0/0 ingress
C) clear counters service-policy tenGigE 0/0/0/0 input
D) clear service-policy counters tenGigE 0/0/0/0 ingress
E) clear qos counters tenGigE 0/0/0/0 input
F) clear counters qos tenGigE 0/0/0/0 input

3. Which Cisco IOS command will show a summary of probes?

A) show ip sla statistics
B) show ip sla configuration
C) show ip sla monitors
D) show ip sla responder

4. Which of these describes Short Pipe mode in QoS for MPLS VPN service providers?

A) Service provider does not remark customer DSCP values. (Service provider uses independent MPLS EXP markings.) Final PE-to-CE policies are based on service provider markings.
B) Service provider can remark customer DSCP values.
C) Service provider does not remark customer DSCP values. (Service provider uses independent MPLS EXP markings.) Final PE-to-CE policies are based on customer markings.
D) The customer and service provider share the same DiffServ domain.

5. Refer to the exhibit. Voice quality is poor on calls placed between the two sites. What change would you

recommend to solve this problem?

A) Change the voice class map to match DSCP EF or CS5.
B) Increase the bandwidth of the voice priority queue.
C) Lower the total bandwidth allocated for the video, critical, and class-default queues, because they are starving the voice queue.
D) Set up WRED to help avoid link congestion.

Solutions: