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

1. Which two match statements are correct in Cisco IOS Software? (Choose two.)

A) class-map match-none class2 match protocol ip
B) class-map match-any class3 match dscp af31 match dscp af41
C) class-map class3 match dscp af31 match dscp af41
D) class-map class1 match not protocol ip

2. When the customer LAN is managed by the service provider and the network is oversubscribed, what is the best location for use of congestion avoidance mechanisms?

A) on output interfaces from the customer LAN leading into the service provider network
B) on output interfaces from the service provider network leading to the customer LAN
C) in interfaces in the service provider network incoming from the customer LAN
D) in the service provider core

3. Which statement about the rates and statistics (such as match, transmit, drop, and police) shown in the show policy-map interface output is true?

A) The rates are computed as a moving average of instantaneous rates.
B) The matched statistics of the packet are displayed in real time.
C) The traffic policing statistics are displayed in real time.
D) The rates are displayed in real time, which matches the actual traffic rate.
E) The matched statistics of the packet can be cleared only when the router reboots.

4. 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.

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

Solutions: