Free JN0-663 Exam Braindumps
Service Provider Routing and Switching, Professional (JNCIP-SP) Questions 31–35 (page: 8)

Updated On: 9-Feb-2026

You have the LDP signaled VPLS topology as shown in the exhibit. CE-B at Site-2 is multihomed to both PE-2 and PE-3.

In this scenario, where would you configure loop prevention?

  1. PE-1
  2. CE-B
  3. PE-3
  4. PE-2

Answer(s): A



A network administrator is migrating from IPv4 to IPv6 and one of the IS-IS adjacencies is not coming up between R1 and R2.


Which action will solve the problem?

  1. Remove topologies ipv6-unicast from protocols isis on R2.
  2. Configure topologies ipv4-unicast from protocols isis on R2.
  3. Remove topologies ipv6-unicast from protocols isis on R1.
  4. Configure an IPv4 address on interface ge-0/0/1 on R1.

Answer(s): D



Referring to the exhibit, there is a Layer 3 VPN setup that connects sites CE-A-1, CE-A-2, and CE-A-3 together. Host-1 can communicate with Host-3, but Host-1 cannot communicate with Host-2.


What must you do to solve the problem?

  1. Change the route distinguisher in both routing instances to the same value.
  2. Use the next-table configuration statement for static routes in the corresponding routing instances.
  3. Use BGP instead of static routing between the CE and PE devices.
  4. Use the auto-export command in both routing instances.

Answer(s): D



Which three statements are true about the show pim join output shown in the exhibit? (Choose three.)

  1. This is a source-specific multicast stream.
  2. The multicast receiver is still using the RP to receive the stream.
  3. The multicast stream has been configured with a backup path to allow for fast reroute.
  4. The multicast stream does not have an RP.
  5. The shortest path to the source is through the RP.

Answer(s): C,D,E



Why do interprovider option B VPNs scale better than interprovider option A VPNs?

  1. The ASBRs in interprovider option B VPNs do not need per-VPN VRF tables.
  2. The ASBRs in interprovider option A VPNs do not need per-VPN VRF tables.
  3. The ASBRs in interprovider option A VPNs only carry internal routes.
  4. The ASBRs in interprovider option B VPNs only carry internal routes.

Answer(s): A



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