Cisco 642-885 - Deploying Cisco Service Provider Advanced Network Routing Exam
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Total 131 questions
Question #11 (Topic: )
Which two options are thecommon methods for implementing Site of Origin on Cisco IOS
XE routers for loop avoidance in multihome BGP customers? (Choose two.)
XE routers for loop avoidance in multihome BGP customers? (Choose two.)
A. Configure the route-map in command on the CE BGP neighbor.
B. Configure Site of Origin directly on the CE BGP neighbor command.
C. Configure site-map on VRF interface and redistribution of iBGP.
D. Configure site-map on VRF interface and network command.
E. Configure the route-map out command on the P router.
Answer: A,B
Question #12 (Topic: )
[Cisco-642-885-7.0/Cisco-642-885-8_2.png]
[Cisco-642-885-7.0/Cisco-642-885-8_3.png]
[Cisco-642-885-7.0/Cisco-642-885-9_2.png]
[Cisco-642-885-7.0/Cisco-642-885-9_3.png]
Which two statements are correct regarding the multicast operations on the router that is
the RP? (Choose two.)
[Cisco-642-885-7.0/Cisco-642-885-8_3.png]
[Cisco-642-885-7.0/Cisco-642-885-9_2.png]
[Cisco-642-885-7.0/Cisco-642-885-9_3.png]
Which two statements are correct regarding the multicast operations on the router that is
the RP? (Choose two.)
A. It is using IGMPv3
B. The IGMP query interval is set to 125 seconds
C. It is using the IPv4 unicast routing table to perform the RPF checks
D. Static multicast routes are configured on the RP
Answer: A,C
Question #13 (Topic: )
Refer to the exhibit.
[Cisco-642-885-7.0/Cisco-642-885-10_2.png]
Which statement correctly explains the bgp graceful-restart command?
[Cisco-642-885-7.0/Cisco-642-885-10_2.png]
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 peer
B. This command is used to enable NSF and is entered on the NSF-capable router, and also on any NSF-aware peer
C. This command is only required on the NSF-capable routers to enable BGP graceful restart with the BGP peers
D. This command is only required on the NSF-aware routers to enable BGP graceful restart with the BGP peers
E. This command is only required on the NSR-capable routers to enable BGP graceful restart with the BGP peers
Answer: B
Question #14 (Topic: )
When implementing interdomain multicast routing, which mechanism can be used to
advertise multicast sources in one domain to the other domains, allowing the RPs to build
interdomain multicast distribution trees?
advertise multicast sources in one domain to the other domains, allowing the RPs to build
interdomain multicast distribution trees?
A. Multiprotocol BGP
B. PIM
C. MSDP
D. Auto RP
E. BSR
F. MLD
Answer: C
Question #15 (Topic: )
Refer to the exhibit.
[Cisco-642-885-7.0/Cisco-642-885-12_2.png]
XR4 must protect itself from a DOS attack against its BGP process from R1 by using the
TTL security feature. Which configuration achieves this goal?
[Cisco-642-885-7.0/Cisco-642-885-12_2.png]
XR4 must protect itself from a DOS attack against its BGP process from R1 by using the
TTL security feature. Which configuration achieves this goal?
A. router bgp 100 neighbor 10.10.14.1 ttl-security
B. router bgp 100 neighbor 10.10.14.1 ttl-security hops 1
C. router bgp 100 neighbor 10.10.14.1 ttl-security hops 254
D. router bgp 100 neighbor 10.10.14.1 ttl-security hops 255
Answer: A
