Cisco 642-785 dumps - in .pdf

642-785 pdf
  • Exam Code: 642-785
  • Exam Name: Maintaining Cisco Service Provider Quality of Service (MSPQS)
  • Updated: Oct 07, 2026
  • Q & A: 91 Questions and Answers
  • PDF Price: $49.99
  • Free Demo

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  • Exam Code: 642-785
  • Exam Name: Maintaining Cisco Service Provider Quality of Service (MSPQS)
  • Updated: Oct 07, 2026
  • Q & A: 91 Questions and Answers
  • PDF Version + PC Test Engine + Online Test Engine
  • Value Pack Total: $99.98  $69.99
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Cisco 642-785 dumps - Testing Engine

642-785 Testing Engine
  • Exam Code: 642-785
  • Exam Name: Maintaining Cisco Service Provider Quality of Service (MSPQS)
  • Updated: Oct 07, 2026
  • Q & A: 91 Questions and Answers
  • Software Price: $49.99
  • Testing Engine

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Cisco 642-785 Exam Syllabus Topics:

SectionObjectives
QoS Troubleshooting and Monitoring- Verification tools and commands
- Identifying QoS misconfiguration issues
Congestion Management and Avoidance- Congestion avoidance (WRED)
- Queuing mechanisms (LLQ, CBWFQ)
Policing and Shaping- Traffic shaping mechanisms and use cases
- Traffic policing concepts and configuration
QoS Fundamentals- Traffic characteristics and service requirements
- QoS models (Best Effort, IntServ, DiffServ)
QoS Classification and Marking- Packet classification methods (ACLs, NBAR)
- Marking techniques (DSCP, CoS, IP Precedence)
Service Provider QoS Implementation- MQC (Modular QoS CLI) framework
- MPLS QoS and DiffServ tunneling

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

Question #1

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

  • A. QoS issues can be difficult to detect when there is not enough traffic to trigger the configured QoS policy.
  • B. The typical cause of QoS issues is intermittent failure of network devices and these are inherently difficult to detect.
  • C. Establishing alarm thresholds for QoS problems can be complicated.
  • D. Troubleshooting class map configurations is complex and frequently required.
  • E. QoS support differs from device to device, depending on underlying hardware platforms and software.
  • F. Collection of data to detect QoS issues is slow and labor-intensive.
Reveal Solution  Discussion  0

Correct Answer: A,C,E  🗳️

Question #2

Refer to the exhibit.

Which statement is correct?

  • A. Packets marked with IP Precedence 5 that exceeds the committed rate will be marked with MPLS EXP 5.
  • B. Packets marked with IP Precedence 5 that conforms to the committed rate will be marked with MPLS EXP 5 then transmitted.
  • C. This policy will police traffic at the ingress and egress directions.
  • D. This is a dual-rate policing example.
Reveal Solution  Discussion  0

Correct Answer: B  🗳️

Question #3

What are the benefits of using differentiated services in the service provider backbone? (Choose two.)

  • A. simple, easy to design, deploy, and operate
  • B. less bandwidth required to achieve the same SLA
  • C. more aggregate traffic supported
  • D. overprovision by two times the maximum aggregate
Reveal Solution  Discussion  0

Correct Answer: B,C  🗳️

Question #4

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. Implement WRED to help prevent tail drops during periods of congestion.
  • B. Decrease the size of output queues in the network to allow the scheduler to allocate link bandwidth fairly.
  • C. Change your QoS model from DiffServ to IntServ for better QoS scalability.
  • D. Implement traffic shaping to smooth out the peaks and troughs.
Reveal Solution  Discussion  0

Correct Answer: A  🗳️

Question #5

Which MQC capabilities are unique to Cisco IOS XR Software?

  • A. congestion management
  • B. congestion avoidance
  • C. classification and marking
  • D. fabric qos
  • E. policing and shaping
Reveal Solution  Discussion  0

Correct Answer: D  🗳️

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