Download Cisco.NewQuestions.642-885.2015-07-21.1e.86q.vcex

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Exam Deploying Cisco Service Provider Advanced Routing (SPADVOUTE)
Number 642-885
File Name Cisco.NewQuestions.642-885.2015-07-21.1e.86q.vcex
Size 93 Kb
Posted July 24, 2018
Downloaded 0



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Demo Questions

Question 1
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)?

  • A: To the other clients only
  • B: To the EBGP peers only
  • C: To the EBGP peers and other clients only
  • D: To the EBGP peers and other clients and non-clients



Question 2
Which two BGP mechanisms are used to prevent routing loops when using a design with redundant route reflectors? (Choose two.)

  • A: Cluster-list
  • B: AS-Path
  • C: Originator ID
  • D: Community
  • E: Origin



Question 3
Which two statements correctly describe the BGP ttl-security feature? (Choose two.)

  • A: This feature protects the BGP processes from CPU utilization-based attacks from EBGP neighbors which can be multiple hops away
  • B: This feature prevents IBGP sessions with non-directly connected IBGP neighbors
  • C: This feature will cause the EBGP updates from the router to be sent using a TTL of 1
  • D: This feature needs to be configured on each participating BGP router
  • E: This feature is used together with the ebgp-multihop command



Question 4
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?

  • A: RP/0/RSP0/CPU0:P2(config-bgp)#
  • B: RP/0/RSP0/CPU0:P2(config-bgp-af)#
  • C: RP/0/RSP0/CPU0:P2(config-bgp-nbr)#
  • D: RP/0/RSP0/CPU0:P2(config-bgp-nbr-af)#



Question 5
In Cisco IOS-XR, the ttl-security command is configured under which configuration mode? 

  • A: RP/0/RSP0/CPU0:P2(config)#
  • B: RP/0/RSP0/CPU0:P2(config-bgp)#
  • C: RP/0/RSP0/CPU0:P2(config-bgp-nbr)#
  • D: RP/0/RSP0/CPU0:P2(config-bgp-af)#
  • E: RP/0/RSP0/CPU0:P2(config-bgp-nbr-af)#



Question 6
Which three methods can be used to reduce the full-mesh IBGP requirement in a service provider core network? (Choose three.)

  • A: Implement route reflectors
  • B: Enable multi-protocol BGP sessions between all the PE routers
  • C: Implement confederations
  • D: Implement MPLS (LDP) in the core network on all the PE and P routers
  • E: Enable BGP synchronization
  • F: Disable the IBGP split-horizon rule



Question 7
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?

  • A: BGP sessions between a route reflector and its clients
  • B: BGP sessions between a route reflector and its non-client IBGP peers
  • C: BGP sessions between a route reflector and another route reflector
  • D: Intra-confederation IBGP sessions
  • E: Intra-confederation EBGP sessions



Question 8
On Cisco IOS-XR, which BGP process can be distributed into multiple instances?

  • A: BGP process manager
  • B: BGP RIB process
  • C: BGP speaker process
  • D: BGP scanner process
  • E: BGP dampening process 



Question 9
Which two statements correctly describe the RPF check when a multicast packet arrives at a router? (Choose two.)

  • A: The router looks up the source address in the unicast routing table to determine if the packet has arrived on the interface that is on the reverse path back to the source
  • B: The router looks up the destination address in the unicast routing table to determine if the packet has arrived on the interface that is on the reverse path back to the destination
  • C: If the packet has arrived on the interface leading back to the destination, the RPF check passes and the packet is forwarded. If the RPF check fails, the packet is dropped
  • D: If the packet has arrived on the interface leading back to the source, the RPF check passes and the packet is forwarded. If the RPF check fails, the packet is dropped



Question 10
When enabling interdomain multicast routing, which two statements are correct? (Choose two.)

  • A: Multiprotocol BGP is used instead of PIM SM to build the intradomain and interdomain multicast distribution trees
  • B: Use MSDP to enable the RPs from different domains to exchange information about active multicast sources
  • C: MSDP SA packets are sent between the multiprotocol BGP peers
  • D: Noncongruent unicast and multicast topologies can be supported using multiprotocol BGP









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