Free Cisco 642-785 Exam Dumps Questions & Answers

Where would a service provider apply this policy?
interface Gi1/1 service-policy output SP-POLICY
policy-map SP-POLICY class CLASS-REALTIME priority set cos 5 ! class CLASS-HIPRIORITY bandwidth remaining percent 75 set cos 3 ! class CLASS-BASIC bandwidth remaining percent 20 set cos 1 !
class class-default set cos 1 ! end-policy-map
class-map match-any CLASS-BASIC match dscp af11 af12 af13 end-class-map ! class-map match-any CLASS-REALTIME match dscp ef af42 af43 end-class-map ! class-map match-any CLASS-HIPRIORITY match dscp af21 af22 end-class-map !

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

Refer to the exhibit.

A customer reports that data between their sites across your network is very slow and that
voice and video quality are unacceptable. Packet traces of data coming in from and going out to the customer confirm that many packets are being dropped in your network, and many of those that are not dropped are being remarked to CS1. Class maps and a policy map configured as shown are applied inbound to the Fast Ethernet interfaces that connect the customer. What could be the problem?

• A.  The customer data is being rate limited, but is not being queued by class, which is causing tail drops and packet remarking.
• B.  The match criteria is DSCP and the customer packets are being sent marked using IP precedence.
• C.  All traffic is matching the class class-default, because all other classes are match-all with multiple match criteria.
• D.  The CIR and PIR values appear to have been configured using kbps when the entries are bps.

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

Refer to the exhibit.

Traffic in CLASS-B is not getting a minimum bandwidth of 192 kb/s in this policy map. What can be done to correct this?

• A.  The shape peak command should be used instead of the shape average command.
• B.  Decrease the maximum queue size.
• C.  No changes are needed, the site is already correct.
• D.  Set the shape rate to a CIR higher than 192 kb/s.

Refer to the exhibit.

A customer has commented that voice quality is not meeting expectations when calls cross your network. This voice packet was captured from the egress link to the customer. This capture is representative of the customer's voice packets across your network and the queuing method shown is representative of packet treatment across your network. How might the problem be corrected?

• A.  Increase the bandwidth for the voice class.
• B.  Set up multiple priority queues to ensure low latency for voice packets.
• C.  Enable WRED in the CBWFQs to minimize the possibility of dropping voice packets.
• D.  Ensure that voice packets are correctly marked when they traverse your network.