Preparation Guide For Cisco 642-889 Exam

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Question No. 1

Which two configuration techniques are used when building MPLS L2VPNs? (Choose two.)

Answer: A, D

Question No. 2

In MPLS Layer 3 VPN implementations, what is used at the PEs to transform the customer IPv4 prefixes into a unique 96-bit prefix?

Answer: B

Question No. 3

A customer needs Internet and MPLS services from the service provider and needs to ensure traffic from the Internet network does not constrain MPLS traffic. Which shared MPLS/Internet service type best accommodates this requirement?

Answer: B

Question No. 4

When implementing Q-in-Q tunneling, the provider switch is configured as a trunk port toward the backbone network, Which switchport mode should be configured for the interface toward the customer?

Answer: A

Question No. 5

Which statement regarding this Cisco 6PE configuration is false?

Answer: B

Question No. 6

Which option is the minimal configuration required inside the L2VPN section ofa Cisco IOS XR PE router to activate VPLS functionality?

Answer: C

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