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Cisco 642-785 Exam Syllabus Topics:

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

Question 1

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. CE interface toward PE
B. P interface toward PE
C. PE interface toward P
D. PE interface toward CE

Question 2

The provider you work for supports a wide range of Cisco router models and Cisco IOS Software releases. You are in the process of moving to a SNMP-based tool to monitor QoS configurations and statistics. What are some of the challenges to this approach?

A. SNMP should be used in conjunction only with Cisco IP SLA to ensure that the information gathered is reported properly.
B. The SNMP MIB provides direct access into the QoS configuration parameters. Poor configuration could lead to changes that are difficult to track.
C. Some models of Cisco routers do not have full support for the class-based QoS MIB, which results in a number of elements that cannot be managed.
D. Older versions of Cisco IOS Software do not maintain index persistency, which results in significant changes in the information that is collected unless properly configured.

Question 3

Which two statements about IP SLA are correct? (Choose two.)

A. IP SLA uses NBAR to provide the reporting engine for statistics that it collects.
B. IOS IP SLA is a traffic monitoring mechanism that gathers statistics about traffic based on packet headers and fields.
C. Cisco IOS IP SLA is Layer 2 transport independent.
D. Cisco IOS IP SLA can be used to help detail billing information for each defined class of service.
E. IOS IP SLA uses active traffic monitoring which allows users to analyze service levels for IP applications.

Question 4

Which three match statements are valid in Cisco IOS XR Software? (Choose three.)

A. match mpls experimental topmost
B. match flow
C. match qos-group
D. match field
E. match vpls
F. match port-type

Question 5

Which is the preferred queuing method provided by Cisco IOS Software for a converged VoIP network?

A. WFQ
B. CBWFQ
C. FIFO
D. LLQ

Solutions: