Cisco 642-785 : Maintaining Cisco Service Provider Quality of Service (MSPQS)

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

1. Refer to the exhibit.

Some customers report that at peak times during the day their average throughput seems to be less than what they expect. While troubleshooting, you notice that data flows sometimes seem to be synchronized with a tendency to increase then drop off in a repeating manner. Which action would help to alleviate this situation?

A) Decrease the size of output queues in the network to allow the scheduler to allocate link bandwidth fairly.
B) Change your QoS model from DiffServ to IntServ for better QoS scalability.
C) Implement WRED to help prevent tail drops during periods of congestion.
D) Implement traffic shaping to smooth out the peaks and troughs.

2. What are three fundamental QoS mechanisms? (Choose three.)

A) marking
B) congestion avoidance
C) policing
D) undersubscription
E) congestion handling

3. What can be used to provide read-only access to QoS configuration information and statistics from a network management station?

A) NBAR
B) SYSLOG
C) NetFlow
D) IP SLA
E) CISCO-CLASS-BASED-QOS-MIB

4. When troubleshooting a QoS problem, which two key statistics should you look for? (Choose two.)

A) interface utilization
B) queue depth
C) queue drops
D) queue utilization
E) queue priority

5. Refer to the exhibit.

Which statement is correct?

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

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