Real 642-885 CCNP Service Provider Dumps

1. Referring to the topology diagram show in the exhibit,

Which three statements are correct regarding the BGP routing updates? (Choose three.)

2. When a BGP route reflector receives an IBGP update from a non-client IBGP peer, the route reflector will then forward the IBGP updates to which other router(s)?

3. Which two BGP mechanisms are used to prevent routing loops when using a design with redundant route reflectors? (Choose two.)

4. Which two statements correctly describe the BGP ttl-security feature? (Choose two.)

5. When implementing source-based remote-triggered black hole filtering, which two configurations are required on the edge routers that are not the signaling router? (Choose two.)

6. In Cisco IOS-XR, the maximum-prefix command, to control the number of prefixes that can be installed from a BGP neighbor, is configured under which configuration mode?

7. In Cisco IOS-XR, the ttl-security command is configured under which configuration mode?

8. Refer to the exhibit.

Given the partial BGP configuration, which configuration correctly completes the Cisco IOS-XR route reflector configuration where both the 1.1.1.1 and 2.2.2.2 routers are the clients and the 3.3.3.3 router is a non-client IBGP peer?

9. Which three methods can be used to reduce the full-mesh IBGP requirement in a service provider core network? (Choose three.)

10. Which type of BGP session behaves like an EBGP session during session establishment but behaves like an IBGP session when propagating routing updates where the local preference, multi-exit discriminator, and next-hop attributes are not changed?

11. You noticed a recent change to the BGP configuration on a PE router, the bgp scan time has been changed from the default value to 30s. Which three effects will this change have? (Choose three.)

12. On Cisco IOS-XR, which BGP process can be distributed into multiple instances?

13. Refer to the configuration exhibit, taken from a Cisco IOS-XR router.

Which configuration change is required to properly enable this router as the signaling router for implementing source-based RTBH filtering?

14. Refer to the Cisco IOS-XR BGP configuration exhibit.

Identify two configuration errors. (Choose two.)

15. Refer to the Cisco IOS-XR show output exhibit.

Which statement is correct?

16. Which two statements correctly describe the RPF check when a multicast packet arrives at a router? (Choose two.)

17. When enabling interdomain multicast routing, which two statements are correct? (Choose two.)

18. The 224.192.16.1 multicast IP address maps to which multicast MAC address?

19. The following Cisco IOS-XR configuration command will globally enable which multicast process(es) on the router?

RP/0/RP0/CPU0:router(config)# multicast-routing

20. Which three statements are correct regarding PIM-SM? (Choose three.)

21. Which of the following is a feature added in IGMPv3?

22. Which types of multicast distribution tree can PIM-SM use?

23. Which multicast routing protocol is most optimal for supporting many-to-many multicast applications?

24. Which statement is correct regarding using the TTL threshold to define the delivery boundaries of multicast traffic?

25. Refer to the exhibit.

Which three statements are correct regarding the Cisco IOS-XR configuration? (Choose three.)

26. Which statement is correct regarding MP-BGP?

27. When implementing interdomain multicast routing, which mechanism can be used to advertise multicast sources in one domain to the other domains, allowing the RPs to build interdomain multicast distribution trees?

28. Which two statements regarding Auto RP operations and implementations are correct? (Choose two.)

29. What is determined by running the same hash algorithm on all PIMv2 routers?

30. When configuring PIM operations, what is the effect of setting the SPT threshold to infinity?

31. Which multicast group range is reserved for SSM?

32. Which four statements are correct regarding MSDP configurations and operations? (Choose four.)

33. Assume that the R1 router is enabled for PIM-SM and receives a multicast packet sourced from 172.16.1.100, and the R1 router has multicast receivers on the Gi0/1, Gi0/2, Gi0/3 and Gi0/4 interfaces.

The multicast packet from the 172.16.1.100 source must arrive on which interface on the R1 router for it to be forwarded out the other interfaces?

34. When verifying multicast configurations and operations on Cisco IOS-XR routers, which two statements regarding show commands are correct? (Choose two.)

35. The bsr-border router PIM interface configuration command is used for what purpose?

36. When implementing Anycast RP, the RPs are also required to establish which kind of peering with each other?