642-885 exam

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.)A . A static route to a prefix that is not used in the network with a next hop set to the Null0 interfaceB . A static...

When implementing IP SLA icmp-echo probes on Cisco IOS-XE routers, which two options are available for IPv6? (Choose two.)A . flow-labelB . hop-limit C . DSCPD . traffic-classE . TOSView AnswerAnswer: A,D Explanation:

Which three statements regarding the BGP operations are correct? (Choose three)A . PE5 is the route reflector with P1 and PE6 as its clientB . PE5 is using the IS-IS route to reach the BGP next-hop for the 172.16.66.0/24 prefixC . PE5 has BGP route dampening enabledD . The BGP...

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 treesB . Use MSDP to enable the RPs from different domains to exchange information about active multicast sourcesC . MSDP SA...

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)#View AnswerAnswer: C

Which two BGP mechanisms are used to prevent routing loops when using a design with redundant route reflectors? (Choose two.)A . Cluster-listB . AS-PathC . Originator ID D . Community E . OriginView AnswerAnswer: A,C Explanation:  As the iBGP learned routes are reflected, routing information may loop. The route reflector model has...

On the PE, which two stateme s are correct regarding the (192.168.156.60 224.1.1.1) entry? (Choose two )A . The RPF neighbor points towards the RPB . The RPF neighbor is reachable overthe GiO/O/O/1 interfaceC . The OIL contains the GiO/O/O/O interfaceD . The IIL is NullView AnswerAnswer: A C Explanation: #show ip mroute

When configuring PIM operations, what is the effect of setting the SPT threshold to infinity?A . The multicast source to the RP path will never switch over to the shortest path treeB . All the PIM routers will have more (S,G) states, thus consuming more router resourcesC . The receivers...

The following Cisco IOS-XR configuration command will globally enable which multicast process(es) on the router? RP/0/RP0/CPU0:router(config)# multicast-routingA . IGMP onlyB . PIM onlyC . IGMP and MLD onlyD . PIM and IGMP onlyE . PIM and IGMP and MLDView AnswerAnswer: E Explanation: http://www.cisco.com/en/US/docs/ios_xr_sw/iosxr_r3.5/multicast/configuration/guide/mc35mcst.ht ml Multicast-routing Configuration Submode When you issue...

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.)A . A static route to a prefix that is not used in the network with a next hop set to the Null0 interfaceB . A static...