642-785 무료 덤프문제 온라인 액세스

Refer to the exhibit.

Your MPLS network is using RFC 3270 Uniform mode. Your customer reports that when a Microsoft NetMeeting call is placed between the workstations, the user at 172.16.1.2 experiences acceptable audio quality but the user at 172.16.2.2 experiences poor audio quality. What course of action should you take?

• A.Use a policy map at the ingress to the PE1 router to remark packets from 172.16.1.2.
• B.Use a policy map at the ingress to the PE2 router to remark packets from 172.16.2.2.
• C.Change your policy to not remark audio packets within your network.
• D.Have the customer set the correct marking of audio packets at the 172.16.2.2 device.
• E.Have the customer set the correct marking of audio packets at the 172.16.1.2 device.

A customer is experiencing poor quality on voice connections coming from a particular branch office. Data on the service provider network capacity indicates that the devices serving that location are heavily oversubscribed. It will be months before planned expansions can be implemented. Which class-based traffic-shaping technique would be appropriate to consider implementing?

• A.shaping to the peak rate
• B.shaping to the observed median rate
• C.shaping to the configured average rate
• D.shaping to the committed rate

Refer to the exhibit.

Which two statements are correct? (Choose two.)

• A.The BULK-DATA traffic class is missing the match-any option in the class-map command.
• B.AF11 or AF12 or AF13 marked packets will be matched to the BULK-DATA traffic class.
• C.No traffic can be matched to the REALTIME traffic class.
• D.No traffic can be matched to the BULK-DATA traffic class.
• E.No traffic can be matched to the VoIP traffic class.

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

When is a best-effort QoS policy most appropriate?

• A.when the customer plans to transport data from no more than one multimedia application
• B.when the CE is self-managed and the customer provides adequate QoS marking
• C.when the customer has high bandwidth access to the network
• D.when the customer will only transport delay-tolerant data