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400-201 – CCIE Service Provider Written Exam (V 4.1)

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Showing 7–9 of 15 questions

Question 7 (Service Provider Based Services)

Refer to the exhibit. OSPF is the PE-CE protocol. A backdoor link exists between the C-59 and C-62. Which two OSPF features are used to enforce that the backdoor link is used only for backup purpose? (Choose two.)

Select all that apply, then click Submit answer.

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    Increase the OSPF link cost between C-59 and C-62.
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    Configure a sham link between PE8 and PE9.
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    Apply site-of-origin feature on PE8 and PE9.
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    Configure a virtual link between C-59 and C-62.
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    PE8 must not import what PE9 is exporting and vice-versa.
Question 8 (Service Provider Based Services)

A VPLS network consists of provider edge routers that have fully meshed pseudowires. The network runs unicast and multicast traffic. The network recently experienced bandwidth- and CPU-related performance issues. While monitoring the VPLS statistics and interface statistics, you note that the network is experiencing an unusual amount of broadcasts and undesired multicast on the network. Which two techniques should the operations team consider in addressing these problems?

Select all that apply, then click Submit answer.

  • ○

    Implement IGMP snooping in the VPLS network.
  • ○

    Enable split horizon between all the pseudowires in the VPLS network
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    Set a limit on MAC learning in the VPLS network
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    Implement Storm Control in the VPLS bridge domain
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    Implement MAC withdrawal on each EFP I the VPLS bridge domain
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    Change the network to run VPWS to manage the broadcast traffic efficiently
Question 9 (Core Routing)

Refer to the exhibit. Which option describes the role of the 10.100.1.3 router?

Select an option, then click Submit answer.

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    ingress router for the point-to-multipoint mLDP tree
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    root router for a multipoint-to-multipoint mLDP tree
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    initiates the upstream mLDP trees
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    holds the mLDP database