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

1. Which MQC capabilities are unique to Cisco IOS XR Software?

A) congestion management
B) congestion avoidance
C) fabric qos
D) policing and shaping
E) classification and marking

2. Refer to the exhibit.

A customer reports that data between their sites across your network is very slow and that
voice and video quality are unacceptable. Packet traces of data coming in from and going out to the customer confirm that many packets are being dropped in your network, and many of those that are not dropped are being remarked to CS1. Class maps and a policy map configured as shown are applied inbound to the Fast Ethernet interfaces that connect the customer. What could be the problem?

A) The match criteria is DSCP and the customer packets are being sent marked using IP precedence.
B) All traffic is matching the class class-default, because all other classes are match-all with multiple match criteria.
C) The customer data is being rate limited, but is not being queued by class, which is causing tail drops and packet remarking.
D) The CIR and PIR values appear to have been configured using kbps when the entries are bps.

3. An MPLS VPN customer reports that the VoIP voice quality is very bad for calls across the
MPLS VPN. What could be the problem?

A) WRED is not configured for the voice traffic class.
B) The voice packets are marked as DSCP EF.
C) The voice traffic class is using the default queue size.
D) Traffic shaping is applied to the voice traffic class.
E) The voice traffic class is using the priority command.

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

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

5. Refer to the exhibit.

You have implemented RFC 3270 Uniform 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 mapped the DSCP values into the MPLS experimental bits, 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) BE
B) AF31
C) CS3
D) CS1

Solutions: