Cisco 642-785 Exam : Maintaining Cisco Service Provider Quality of Service (MSPQS)

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Cisco 642-785 Exam Syllabus Topics:

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

1. Refer to the exhibit.

Which two statements about the SP-REALTIME traffic class are true? (Choose two.)

A) The police configuration command is missing the violate-action option.
B) The priority configuration command is missing the maximum guaranteed bandwidth rate.
C) Traffic is queued using LLQ.
D) Traffic conforming to the police rate will be transmitted and all the markings on the packets will be cleared.
E) Traffic is policed to 35 percent of the interface bandwidth.

2. Which Cisco IOS command lists all traffic classifications?

A) show policy-map
B) show class-map
C) show service-policy
D) show qos

3. Within a QoS policy-map configuration, one of the traffic classes is configured with the random-detect dscp-based configuration command. What will that command accomplish?

A) provides congestion avoidance by selectively delaying the delivery of packets with lower DSCP priority
B) provides congestion management by queueing the traffic using CBWFQ
C) decreases the probability of congestion by selectively dropping TCP packets before the queue is full
D) provides congestion management by queueing the traffic using LLQ
E) decreases congestion by avoiding global UDP synchronization

4. Which Cisco IOS XR command will help troubleshoot why a policy map fails to apply on an interface?

A) show policymgr qos trace all
B) show qos interface tenGigE 0/0/0/0
C) show policy-map interface tenGigE 0/0/0/0
D) clear qos counters
E) show service-policy interface tenGigE 0/0/0/0

5. Where do service providers apply policy when traffic is leaving the customer network? (Choose two.)

A) Apply output policy on the PE interface toward CE, if CE is managed.
B) Apply input policy on the PE interface toward CE, if CE is unmanaged.
C) Apply output policy on the CE interface toward PE, if CE is managed.
D) Apply input policy on the PE interface toward CE, if CE is managed.
E) Apply input policy on the CE interface toward PE, if CE is unmanaged.

Solutions: