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

1. Refer to the exhibit.

You have implemented RFC 3270 Pipe mode in your MPLS network. A customer packet with the DSCP value of AF31 has been sent to the ingress PE router. The PE router has set the MPLS experimental bits per policy, but the policer has remarked the experimental bits of the top label. What will the DSCP value of the packet be when it leaves the egress PE router?

A) CS3
B) CS4
C) BE
D) CS1
E) AF31

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

A) Traffic flows are continuously high.
B) Relatively few tools are available for collecting service quality data.
C) Packets have to traverse many network devices and links that add up to the overall delay.
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 Uniform 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 MPLS VPN label EXP value.
D) The Differentiated Services field value in the IP packet header.

4. Refer to the exhibit.

Which statement is correct?

A) This policy map is applied to the FastEthernet0/0 interface in the input direction.
B) No traffic matched the SP-REALTIME class.
C) Packets marked with both DSCP EF and MPLS EXP 5 markings will not be classified into the SP-REALTIME traffic class.
D) A total of 133836 packets have been transmitted out of the FastEthernet0/0 interface.
E) The FastEthernet0/0 interface is using CBWFQ egress queueing.

5. Where would a service provider apply this policy?
interface Gi1/1 service-policy output SP-POLICY
policy-map SP-POLICY class CLASS-REALTIME priority set cos 5 ! class CLASS-HIPRIORITY bandwidth remaining percent 75 set cos 3 ! class CLASS-BASIC bandwidth remaining percent 20 set cos 1 !
class class-default set cos 1 ! end-policy-map
class-map match-any CLASS-BASIC match dscp af11 af12 af13 end-class-map ! class-map match-any CLASS-REALTIME match dscp ef af42 af43 end-class-map ! class-map match-any CLASS-HIPRIORITY match dscp af21 af22 end-class-map !

A) PE interface toward CE
B) P interface toward PE
C) PE interface toward P
D) CE interface toward PE

Solutions: