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Cisco 642-785 valid dump torrent : Maintaining Cisco Service Provider Quality of Service (MSPQS)
- Exam Code: 642-785
- Exam Name: Maintaining Cisco Service Provider Quality of Service (MSPQS)
- Updated: Sep 11, 2026
- Q&As: 91 Questions and Answers
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Cisco 642-785 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Policing and Shaping | - Traffic policing concepts and configuration - Traffic shaping mechanisms and use cases |
| Topic 2: QoS Troubleshooting and Monitoring | - Identifying QoS misconfiguration issues - Verification tools and commands |
| Topic 3: Congestion Management and Avoidance | - Queuing mechanisms (LLQ, CBWFQ) - Congestion avoidance (WRED) |
| Topic 4: QoS Classification and Marking | - Marking techniques (DSCP, CoS, IP Precedence) - Packet classification methods (ACLs, NBAR) |
| Topic 5: QoS Fundamentals | - QoS models (Best Effort, IntServ, DiffServ) - Traffic characteristics and service requirements |
| Topic 6: Service Provider QoS Implementation | - MPLS QoS and DiffServ tunneling - MQC (Modular QoS CLI) framework |
Cisco Maintaining Cisco Service Provider Quality of Service (MSPQS) Sample Questions:
Question #1
Which three issues are important challenges for monitoring service quality in the SP core network? (Choose three.)
- A. Packets have to traverse many network devices and links that add up to the overall delay.
- B. Relatively few tools are available for collecting service quality data.
- C. Multiple flows compete for a limited amount of bandwidth.
- D. Packets may have to be dropped when a link is congested.
- E. Traffic flows are continuously high.
Correct Answer: A,C,D 🗳️
Question #2
Refer to the exhibit. Voice quality is poor on calls placed between the two sites. What change would you
recommend to solve this problem?
- A. Change the voice class map to match DSCP EF or CS5.
- B. Increase the bandwidth of the voice priority queue.
- C. Set up WRED to help avoid link congestion.
- D. Lower the total bandwidth allocated for the video, critical, and class-default queues, because they are starving the voice queue.
Correct Answer: A 🗳️
Question #3
What are three fundamental QoS mechanisms? (Choose three.)
- A. undersubscription
- B. congestion avoidance
- C. congestion handling
- D. policing
- E. marking
Correct Answer: B,D,E 🗳️
Question #4
Which Cisco IOS IP SLA Probe would you select to identify bottlenecks in the network?
- A. ICMP Path Echo
- B. ICMP Echo
- C. ICMP Path Jitter
- D. FTP Path Echo
Correct Answer: A 🗳️
Question #5
What would be the first step when defining an MQC?
- A. Apply the commands such as bandwidth, police, and set dscp to enable the QoS feature.
- B. Attach the traffic policy (policy map) to the interface by using the service-policy command.
- C. Define a traffic class by using the class-map command.
- D. Add one or more match commands to classify packets.
- E. Create a traffic policy by using the policy-map command.
Correct Answer: C 🗳️
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