Exam Name: Maintaining Cisco Service Provider Quality of Service (MSPQS)
Certification Provider: Cisco
Corresponding Certification: CCNP SP Operations
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Cisco 642-785 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Congestion Management and Avoidance | - WRED configuration and behavior - WFQ, CBWFQ and Priority Queuing |
| Quality of Service Fundamentals | - Traffic classification and marking - Service Provider QoS models and design |
| Monitoring and Troubleshooting QoS | - IP SLA and performance measurement - QoS statistics and verification |
| QoS Mechanisms in MPLS Networks | - EXP and DSCP mapping - RFC 3270 Uniform and Pipe modes |
| Service Provider QoS Implementation | - Policy maps and class maps - Implementing QoS on Cisco IOS routers |
Cisco Maintaining Cisco Service Provider Quality of Service (MSPQS) Sample Questions:
Refer to the exhibit.
A customer has commented that voice quality is not meeting expectations when calls cross your network. This voice packet was captured from the egress link to the customer. This capture is representative of the customer's voice packets across your network and the queuing method shown is representative of packet treatment across your network. How might the problem be corrected?
- A. Enable WRED in the CBWFQs to minimize the possibility of dropping voice packets.
- B. Set up multiple priority queues to ensure low latency for voice packets.
- C. Ensure that voice packets are correctly marked when they traverse your network.
- D. Increase the bandwidth for the voice class.
Correct Answer: C 🗳️
Refer to the exhibit.
Which statement is correct?
- A. No traffic matched the SP-REALTIME class.
- B. The FastEthernet0/0 interface is using CBWFQ egress queueing.
- C. Packets marked with both DSCP EF and MPLS EXP 5 markings will not be classified into the SP-REALTIME traffic class.
- D. This policy map is applied to the FastEthernet0/0 interface in the input direction.
- E. A total of 133836 packets have been transmitted out of the FastEthernet0/0 interface.
Correct Answer: E 🗳️
To classify and prioritize traffic according to importance, which three statements are correct? (Choose three.)
- A. Email should be placed in a best-effort class.
- B. Video should be placed in the same class as voice.
- C. Each class should be guaranteed at least some bandwidth.
- D. Voice traffic should be given top priority.
- E. Critical applications should be given sufficient bandwidth to meet their requirements.
Correct Answer: A,D,E 🗳️
Which two tools can be used to monitor and report on if a QoS queue is working on a network device? (Choose two.)
- A. Splunk
- B. IP SLA
- C. NetCool
- D. Remedy
- E. CiscoWorks IPM
- F. InfoVista
Correct Answer: E,F 🗳️
What are three fundamental QoS mechanisms? (Choose three.)
- A. undersubscription
- B. congestion handling
- C. marking
- D. congestion avoidance
- E. policing
Correct Answer: C,D,E 🗳️
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