Cisco CCNP SP Operations 642-785

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

1. Refer to the exhibit.

Which statement is correct?

A) The FastEthernet0/0 interface is using CBWFQ egress queueing.
B) This policy map is applied to the FastEthernet0/0 interface in the input direction.
C) A total of 133836 packets have been transmitted out of the FastEthernet0/0 interface.
D) Packets marked with both DSCP EF and MPLS EXP 5 markings will not be classified into the SP-REALTIME traffic class.
E) No traffic matched the SP-REALTIME class.

2. Refer to the exhibit.

The voice traffic is not receiving the appropriate per-hop behavior at the egress of the CEPE link. What is the problem?

A) The control traffic class should be configured with the priority command instead of the bandwidth command.
B) Both ACLs are misconfigured.
C) Instead of hard coding the actual bandwidth on the priority and bandwidth commands, the percent option should be used.
D) Both class maps are misconfigured.

3. A customer with an unmanaged CE router has reported experiencing poor quality on the video conferencing and broadcast multimedia applications. To address the issue, the provider has implemented shaping on the PE router to "smooth out" speed mismatches in the network. Which of these is a valid concern with this approach?

A) In addition to shaping, the provider should implement policing so the application can detect the congestion and throttle traffic.
B) Shaping should only be used in a TCP-based environment where the application can detect the congestion and adjust. Shaping provides little benefit with UDP applications.
C) While shaping may help the broadcast multimedia application, it could cause additional delay in the video conferencing application.
D) Shaping can only be applied to the outbound interface, which does not prevent the customer from flooding the inbound link to the provider.

4. Which statement about the MQC configuration shown here for the class-default traffic class is true?
policy-map CE-EDGE-4CLASS-OC3-POS-1
class class-default
bandwidth percent 25
!

A) This configuration is invalid, because the class-default traffic class does not support the bandwidth command.
B) The maximum number of packets the queue for the class-default class can hold is 64 packets using the default queue-limit.
C) The bandwidth percent is referenced to the reserved bandwidth on the interface.
D) The class-default class will use WFQ instead of FIFO queueing.

5. 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) Establishing alarm thresholds for QoS problems can be complicated.
C) The typical cause of QoS issues is intermittent failure of network devices and these are inherently difficult to detect.
D) QoS support differs from device to device, depending on underlying hardware platforms and software.
E) Troubleshooting class map configurations is complex and frequently required.
F) Collection of data to detect QoS issues is slow and labor-intensive.

Solutions: