642-785 무료 덤프문제 온라인 액세스

When the RFC 3270 Uniform mode is used, the PHB at the egress router is based on which of these?

• A.The packet is re-evaluated, remarked, and the PHB is based on this new marking.
• B.The topmost MPLS label EXP value.
• C.The Differentiated Services field value in the IP packet header.
• D.The MPLS VPN label EXP value.

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

Refer to the exhibit.

Which statement is correct?

• A.This example is a traffic policer, and three token buckets are used to meter the incoming traffic.
• B.This example is a dual-bucket policer, and only traffic that exceeds the committed rate will be dropped.
• C.This example is a percentage-based policer, and the configured percentage is referenced to the input or output queue size.
• D.This example is a traffic policer, and traffic exceeding the committed rate will be buffered until the congestion is cleared.
• E.This example is a dual-rate policer, and traffic exceeding either the peak or the committed rate will be dropped.

A customer reports drops for traffic in the BIZ-CRITICAL class. As part of the verification process you identify that there is a high number of random drops. Which of these can help address this problem?

• A.Increase the WRED min threshold value for the traffic class.
• B.Decrease the queue limit for the traffic class.
• C.Enable fair queuing for the BIZ-CRITICAL class.
• D.Decrease the WRED drop probability denominator for the class.

Where would you apply WRED to avoid congestion and poor QoS from oversubscription of the network?

• A.wherever there is a potential bottleneck and traffic is delay-intolerant
• B.wherever there is a potential bottleneck and most traffic is TCP
• C.wherever there is a potential bottleneck
• D.wherever there is a potential bottleneck and most traffic is UDP
• E.wherever there is a potential bottleneck and most traffic is voice