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Cisco 642-785 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Monitoring and Troubleshooting QoS | 20% | - Verifying QoS policies on IOS and IOS XR - Analyzing queuing and congestion problems - Troubleshooting classification and marking issues |
| QoS Fundamentals in Service Provider Networks | 20% | - Classification and marking mechanisms - Quality of Service models and architectures - DiffServ, IntServ, and MPLS QoS integration |
| Queuing and Scheduling Mechanisms | 25% | - Modular QoS CLI (MQC) implementation - Low Latency Queuing (LLQ) - Class-Based Weighted Fair Queuing (CBWFQ) |
| QoS in MPLS and Service Provider Environments | 15% | - QoS for Layer 2 and Layer 3 VPN services - SLAs and QoS policy maintenance - End-to-end QoS across MPLS networks |
| Traffic Policing and Shaping | 20% | - Congestion management and avoidance - Shaping mechanisms and operation - Policing concepts and configuration |
Cisco Maintaining Cisco Service Provider Quality of Service (MSPQS) Sample Questions:
Where do service providers apply policy when traffic is leaving the customer network? (Choose two.)
- A. Apply input policy on the CE interface toward PE, if CE is unmanaged.
- B. Apply output policy on the CE interface toward PE, if CE is managed.
- C. Apply input policy on the PE interface toward CE, if CE is unmanaged.
- D. Apply output policy on the PE interface toward CE, if CE is managed.
- E. Apply input policy on the PE interface toward CE, if CE is managed.
Correct Answer: B,C 🗳️
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 traffic policing statistics are displayed in real time.
- B. The rates are computed as a moving average of instantaneous rates.
- C. The matched statistics of the packet can be cleared only when the router reboots.
- D. The rates are displayed in real time, which matches the actual traffic rate.
- E. The matched statistics of the packet are displayed in real time.
Correct Answer: B 🗳️
To classify and prioritize traffic according to importance, which three statements are correct? (Choose three.)
- A. Voice traffic should be given top priority.
- B. Each class should be guaranteed at least some bandwidth.
- C. Critical applications should be given sufficient bandwidth to meet their requirements.
- D. Video should be placed in the same class as voice.
- E. Email should be placed in a best-effort class.
Correct Answer: A,C,E 🗳️
When troubleshooting a QoS problem, which two key statistics should you look for? (Choose two.)
- A. interface utilization
- B. queue priority
- C. queue drops
- D. queue depth
- E. queue utilization
Correct Answer: C,D 🗳️
Which two tools can be used to monitor and report on if a QoS queue is working on a network device? (Choose two.)
- A. IP SLA
- B. Splunk
- C. CiscoWorks IPM
- D. InfoVista
- E. NetCool
- F. Remedy
Correct Answer: C,D 🗳️
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