642-885 exam

DRAG DROP View AnswerAnswer: Explanation: The amount of time for the penalty to decrease to one-half of its current value - 60 Suppress a route when its penalty exceeds this value - 2400 If a flapping route penalty decreases and falls below this value , the route is unsuppressed -...

Refer to the exhibit. Which statement correctly explains the bgp graceful-restart command?A . This command is used to enable NSR and is entered on the NSR-capable router, and also on any NSR-aware peerB . This command is used to enable NSF and is entered on the NSF-capable router, and also...

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:

On Cisco IOS-XR, which BGP process can be distributed into multiple instances?A . BGP process managerB . BGP RIB processC . BGP speaker processD . BGP scanner processE . BGP dampening processView AnswerAnswer: C Explanation: Cisco IOS XR allows you to control the configuration of the number of distributed speakersand...

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:

When implementing high-availability stateful switchover BGP routing, in which situation would Cisco NSR be required?A . On the PE routers connecting to the CE routers which are not NSF aware or are not NSF capableB . On the PE routers connecting to the CE routers which support graceful restartC ....

The 224.192.16.1 multicast IP address maps to which multicast MAC address?A . 01-00-5E-C0-10-01B . 01-00-5E-40-10-01C . 01-00-5E-00-10-01D . 01-00-5E-C0-16-01View AnswerAnswer: B Explanation: Leastsignificant 23 bits of IP address and pre-pend 01-00-5E 224 ignore 192 less 128 becomes 64 = 40 16 = 10 1 = 01 01-00-5E-40-10-01

The 224.192.16.1 multicast IP address maps to which multicast MAC address?A . 01-00-5E-C0-10-01B . 01-00-5E-40-10-01C . 01-00-5E-00-10-01D . 01-00-5E-C0-16-01View AnswerAnswer: B Explanation: Leastsignificant 23 bits of IP address and pre-pend 01-00-5E 224 ignore 192 less 128 becomes 64 = 40 16 = 10 1 = 01 01-00-5E-40-10-01

What is one of the configuration errors within an AS that can stop a Cisco IOS-XR router from announcing certain prefixes to its EBGP peers?A . Some prefixes were mistagged with the no-export BGP communityB . Some prefixes were set with an MED of 0C . The outbound BGP route...

Which type of DNS record is used for IPv6 forward lookups?A . A recordsB . AAAA records C . PTR records D . MX recordsView AnswerAnswer: B Explanation: