642-885 exam

Which statement is correct regarding using the TTL threshold to define the delivery boundaries of multicast traffic?A . If a packet TTL is less than the specified TTL threshold, the packet is forwarded out of the interfaceB . If a packet TTL is greater or equal to the specified TTL...

When verifying multicast configurations and operations on Cisco IOS-XR routers, which two statements regarding show commands are correct? (Choose two.)A . Use the show route ipv4 multicast command to display the incoming and outgoing interface lists for each of the joined multicast groupsB . Use the show pim rpf command...

Refer to the Cisco IOS configuration exhibit. Which statement is correct?A . This configuration is typically configured on the boundary routers within a PIM SM domain to filter out malicious candidate-RP-announce and candidate-RP-discovery packetsB . This configuration is typically configured on the RPs within a PIM-SM domain to restrict the...

Refer to the exhibit. Which three statements are correct regarding the Cisco IOS-XR configuration? (Choose three.)A . This router, acting as the RP mapping agent, will send RP announcement messages to the 224.0.1.40 groupB . This router, acting as the RP mapping agent, will send RP discovery messages to the...

Which three methods can be used to reduce the full-mesh IBGP requirement in a service provider core network? (Choose three.)A . Implement route reflectorsB . Enable multi-protocol BGP sessions between all the PE routersC . Implement confederationsD . Implement MPLS (LDP) in the core network on all the PE and...

Which three statements are correct regarding PIM-SM? (Choose three.)A . There are three ways to configure the RP: Static RP, Auto-RP, or BSRB . PIM-SM only uses the RP rooted shared tree and has no option to switch over to the shortest path treeC . Different RPs can be configured...

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...

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 clientsB . BGP sessions between a...

When implementing Anycast RP, the RPs are also required to establish which kind of peering with each other?A . BGPB . Multiprotocol BGPC . MSDPD . Bidirectional PIME . PIM SSMView AnswerAnswer: C Explanation: http://www.cisco.com/en/US/docs/ios/solutions_docs/ip_multicast/White_papers/anycast.html Using Anycast RP is an implementation strategy that provides load sharing and redundancy in ProtocolIndependent...

168.1.1 RP/0/RSP0/CPU0:P1(config-bgp-nbr)#bfd fast-detect D. bfd fast-detect also needs to be enabled for the 192.168.1.1 neighbor address-family under neighbor 192.168.1.1 address-family ipv4 unicast RP/0/RSP0/CPU0:P1(config-bgp-nbr-af)#bfd fast-detect E. bfd fast-detect also needs to be enabled globally on the router RP/0/RSP0/CPU0:P1(config)#bfd fast-detectView AnswerAnswer: C Explanation: