Cisco 642-889 Practice Exam Questions

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Question No. 1

Refer to the exhibit.

If R1 is operating in an Cisco IOS XR environment, which task must you perform to

complete the VPLS configuration?

Answer: A

Question No. 2

Which two statements describe the behavior of L2VPN technology? (Choose two_)

Answer: A, D

Question No. 3

What is required on a Cisco IOS XR router to assign an interface to a VRF?

Answer: D

Question No. 4

On Cisco IOS and IOS XE Layer 3 MPLS VPN implementations, when redistributing the customer RIP routes into MP-BGP, the RIP metric is copied into which BGP attribute?

Answer: C

Use the red bgp metric transparent command to preserve the RIP metrics.

When RIP routes are redistributed into BGP, the route metric is stored in the BGP MED value. When BGP routes are redistributed into RIP, and the transparent keyword used, the MED value is copied back as the RIP metric. Without the transparent keyword, the metric value specified is applied to all the routes.

Question No. 5

Which three possible misconfigurations can occur on the backbone IGP section of an MPLS Layer 3 VPN setup? (Choose three.)

Answer: A, D, E

Question No. 6

In which Cisco IOS XR configuration mode is the redistribute static command applied to enable the redistribution of static VRF routes between the PE routers?

Answer: D

Question No. 7

Which aspect of provider tunnel ports do you need to consider when configuring Q-in-Q tunneling to support customer VLANs?

Answer: D

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