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Cisco 642-785 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: QoS Fundamentals | - QoS models (Best Effort, IntServ, DiffServ) - Traffic characteristics and service requirements |
| Topic 2: QoS Classification and Marking | - Marking techniques (DSCP, CoS, IP Precedence) - Packet classification methods (ACLs, NBAR) |
| Topic 3: Congestion Management and Avoidance | - Queuing mechanisms (LLQ, CBWFQ) - Congestion avoidance (WRED) |
| Topic 4: QoS Troubleshooting and Monitoring | - Identifying QoS misconfiguration issues - Verification tools and commands |
| Topic 5: Policing and Shaping | - Traffic policing concepts and configuration - Traffic shaping mechanisms and use cases |
| 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 match statements are valid in Cisco IOS XR Software? (Choose three.)
A. match mpls experimental topmost
B. match field
C. match port-type
D. match qos-group
E. match vpls
F. match flow
Question 2
A service provider will apply this policy at which of these interfaces?
interface Gi1/1 service-policy output SP-POLICY ! policy-map SP-POLICY class TRAFFIC-CLASS-1 police rate percent 20 conform-action transmit exceed-action drop priority ! class TRAFFIC-CLASS-2 bandwidth percent 50 queue-limit 800 ms random-detect exp 3 280 ms 490 ms ! class class-default queue-limit 500 ms random-detect exp 1 200 ms 350 ms random-detect exp 0 100 ms 200 ms ! end-policy-map ! class-map match-any TRAFFIC-CLASS-1 match dscp ipv4 45 ef cs6 match mpls experimental topmost 5 6 end-class-map ! class-map match-any TRAFFIC-CLASS-2 match dscp ipv4 cs2 af21 af23 af31 af32 af33 35 37 match mpls experimental topmost 3 end-class-map !
A. P interface toward PE
B. PE interface toward P
C. CE interface toward PE
D. PE interface toward CE
Question 3
Which tool is best suited to provide incident management or trouble ticketing?
A. CiscoWorks
B. Voyence
C. Intelliden
D. Tivoli
E. Remedy
Question 4
Refer to the exhibit.
Which queueing method has been configured?
A. LLQ
B. priority queueing
C. CBWFQ
D. MDRR
E. WFQ
Question 5
Refer to the exhibit.
Which two statements are correct? (Choose two.)
A. Within the cust2-classes policy, the gold class is guaranteed 30 percent of the S3/2 interface bandwidth. Silver is guaranteed 15 percent of the S3/2 interface bandwidth. Bronze is guaranteed 10 percent of the S3/2 interface bandwidth.
B. The policy map cust-policy specifies an average traffic shaping rate of 384 kb/s for the cust1 class and assigns the service policy cust1-classes to the cust1 class.
C. The traffic class cust2 is ensured a bandwidth of 51.2 kb/s.
D. This example queues the traffic into different CBWFQ classes before the aggregate traffic is shaped.
E. This example is a hierarchical MQC example, and the cust-policy is the child policy.
F. Within the cust1-classes policy, the gold class is guaranteed 50 percent of the bandwidth. Silver is guaranteed 20 percent of the bandwidth, and bronze is guaranteed 15 percent of the bandwidth.
Solutions:
| Question 1 Answer: A,D,E | Question 2 Answer: B | Question 3 Answer: E | Question 4 Answer: C | Question 5 Answer: B,F |





