Cisco 642-885 시험문제

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시험 번호/코드: 642-885
시험 이름: Cisco (Deploying Cisco Service Provider Advanced Routing (SPADVOUTE))
당신이 구입하기 전에 시도
일년동안 무료 업데이트
100% 환불보장약속
100% 합격율 보장
Q&A: 80 문항
업데이트: 2013-09-25

Cisco 642-885인증시험은 전문적인 관련지식을 테스트하는 인증시험입니다. ITExamDump는 여러분이Cisco 642-885인증시험을 통과할 수 잇도록 도와주는 사이트입니다. 여러분은 응시 전 저희의 문제와 답만 잘 장악한다면 빠른 시일 내에 많은 성과 가 있을 것입니다.

642-885 덤프무료샘플다운로드하기: http://www.itexamdump.com/642-885.html

NO.1 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
Answer: A,D

Cisco자격증   642-885   642-885

NO.2 Refer to the topology diagram shown in the exhibit and the partial configurations shown below.
Once the attack from 209.165.201.144/28 to 209.165.202.128/28 has been detected, which additional
configurations are required on the P1 IOS-XR router to implement source-based remote-triggered black
hole filtering?
! router bgp 123 address-family ipv4 unicast redistribute static route-policy test !
A. router static address-family ipv4 unicast 209.165.202.128/28 null0 tag 666 192.0.2.1/32 null0 tag 667 !
route-policy test if tag is 666 then set next-hop 192.0.2.1 endif if tag is 667 then set community (no-export)
endif end-policy !
B. router static address-family ipv4 unicast 209.165.201.144/28 null0 tag 666 192.0.2.1/32 null0 tag 667 !
route-policy test if tag is 666 then set next-hop 192.0.2.1 endif if tag is 667 then set community (no-export)
endif end-policy !
C. router static address-family ipv4 unicast 209.165.201.144/28 null0 tag 666 192.0.2.1/32 null0 !
route-policy test if tag is 666 then set next-hop 192.0.2.1 set community (no-export) endif end-policy
D. router static address-family ipv4 unicast 209.165.202.128/28 null0 tag 666 192.0.2.1/32 null0 !
route-policy test if tag is 666 then set next-hop 192.0.2.1 set community (no-export) endif end-policy !
Answer: C

Cisco기출문제   642-885   642-885 dump

NO.3 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
Answer: C

Cisco   642-885인증   642-885 dumps   642-885   642-885최신덤프

NO.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)#
Answer: D

Cisco   642-885기출문제   642-885   642-885기출문제

NO.5 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?
A. neighbor 1.1.1.1 remote-as 65123 route-reflector-client neighbor 2.2.2.2 remote-as 65123
route-reflector-client neighbor 3.3.3.3 remote-as 65123
B. neighbor 1.1.1.1 address-family ipv4 unicast remote-as 65123 route-reflector-client neighbor 2.2.2.2
address-family ipv4 unicast remote-as 65123 route-reflector-client neighbor 3.3.3.3 address-family ipv4
unicast remote-as 65123
C. neighbor 1.1.1.1 remote-as 65123 address-family ipv4 unicast route-reflector-client neighbor 2.2.2.2
remote-as 65123 address-family ipv4 unicast route-reflector-client neighbor 3.3.3.3 remote-as 65123
D. neighbor 1.1.1.1 remote-as 65123 neighbor 1.1.1.1 route-reflector-client neighbor 2.2.2.2 remote-as
65123 neighbor 2.2.2.2 route-reflector-client neighbor 3.3.3.3 remote-as 65123
Answer: C

Cisco   642-885 pdf   642-885덤프   642-885

NO.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
Answer: A,C,D

Cisco시험문제   642-885자료   642-885기출문제   642-885자격증   642-885   642-885

NO.7 Referring to the topology diagram show in the exhibit,
which three statements are correct regarding the BGP routing updates? (Choose three.)
A. The EBGP routing updates received by R1 from R5 will be propagated to the R2, R4, and R7 routers
B. The EBGP routing updates received by R3 from R6 will be propagated to the R2 and R4 routers
C. The EBGP routing updates received by R1 from R5 will be propagated to the R2 and R4 routers
D. The IBGP routing updates received by R3 from R2 will be propagated to the R6 router
E. The IBGP routing updates received by R2 from R1 will be propagated to the R3 router
F. The IBGP routing updates received by R1 from R4 will be propagated to the R5, R7, and R2 routers
Answer: A,B,D

Cisco dump   642-885   642-885 dumps   642-885최신덤프

NO.8 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)#
Answer: C

Cisco자료   642-885   642-885   642-885 pdf

NO.9 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 interface
B. A static route pointing to the IP address of the attacker
C. uRPF on all external facing interfaces at the edge routers
D. Redistribution into BGP of the static route that points to the IP address of the attacker
E. A route policy to set the redistributed static routes with the no-export BGP community
Answer: A,C

Cisco dump   642-885   642-885   642-885   642-885

NO.10 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
Answer: A,C

Cisco자료   642-885 dumps   642-885기출문제   642-885덤프

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