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

1. Which three items are important when monitoring service quality in the SP network? (Choose three.)

A) Establishing alarm thresholds for QoS problems can be complicated.
B) Troubleshooting class map configurations is complex and frequently required.
C) QoS support differs from device to device, depending on underlying hardware platforms and software.
D) QoS issues can be difficult to detect when there is not enough traffic to trigger the configured QoS policy.
E) The typical cause of QoS issues is intermittent failure of network devices and these are inherently difficult to detect.
F) Collection of data to detect QoS issues is slow and labor-intensive.

2. What are the three primary types of faults associated with QoS fault management? (Choose three.)

A) classification faults
B) assurance faults
C) marking faults
D) physical faults
E) buffer faults
F) queue faults

3. The provider you work for supports a wide range of Cisco router models and Cisco IOS Software releases. You are in the process of moving to a SNMP-based tool to monitor QoS configurations and statistics. What are some of the challenges to this approach?

A) SNMP should be used in conjunction only with Cisco IP SLA to ensure that the information gathered is reported properly.
B) The SNMP MIB provides direct access into the QoS configuration parameters. Poor configuration could lead to changes that are difficult to track.
C) Older versions of Cisco IOS Software do not maintain index persistency, which results in significant changes in the information that is collected unless properly configured.
D) Some models of Cisco routers do not have full support for the class-based QoS MIB, which results in a number of elements that cannot be managed.

4. 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) AF31
B) CS3
C) CS4
D) CS1
E) BE

5. Which statement about when you mix TCP and UDP traffic in the same class and overflow occurs is true?

A) UDP traffic suffers more, because TCP guarantees delivery.
B) TCP traffic is starved, because UDP never slows down when packets get dropped.
C) The overflow is not a problem, because both TCP and UDP packets get randomly dropped and traffic will back out.
D) Mixing TCP and UDP in the same class is not supported.

Solutions: