The Secret of Cisco 642-885 exam dumps

Q1. Which three statements are correct regarding the various multicast groups? (Choose three.) 

A. Currently there is no source sending traffic to the 224.1.1.1 multicast group 

B. PE5 has a Null OILforthe (*,224.0.1.40) entry 

C. PE5 has a Null OILforthe (*,224.1.1.1) entry 

D. CE5 has joined the 224.0.1.40 multicast group 

E. CE5 has a Null OILforthe (*,224.1.1.1) entry 

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Q2. Which types of multicast distribution tree can PIM-SM use? 

A. Only shared tree rooted at the source 

B. Only shared tree rooted at the RP 

C. Only shortest path tree rooted at the RP 

D. Shared tree rooted at the source and shortest path tree switchover 

E. Shared tree rooted at the RP and shortest path tree switchover F. Shared tree rooted at the first-hop router and shortest path tree rooted at the RP 

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Q3. Refer to the exhibit. 

Which configuration is missing to complete the configuration task of enabling BFD with the 

192.168.1.1 EBGP peer? 

A. bfd fast-detect also needs to be enabled globally under router bgp 64500 RP/0/RSP0/CPU0:P1(config-bgp)#bfd fast-detect 

B. bfd fast-detect also needs to be enabled for the address-family under address-family ipv4 

unicast RP/0/RSP0/CPU0:P1(config-bgp-af)#bfd fast-detect 

C. bfd fast-detect also needs to be enabled for the 192.168.1.1 neighbor under neighbor 

192.168.1.1 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-detect 

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Q4. You noticed a recent change to the BGP configuration on a PE router, the bgp scan time has been changed from the default value to 30s. Which three effects will this change have? (Choose three.) 

A. The BGP table will be examined and verified more frequently 

B. The BGP keepalive messages will be sent to the BGP peers at a faster rate 

C. The BGP table will be modified more quickly in the event that a next-hop address becomes unreachable 

D. The CPU load of the router will increase 

E. The minimum time interval between sending EBGP and IBGP routing updates will decrease 

F. The BGP convergence time will increase 

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Q5. Refer to the configuration exhibit, taken from a Cisco IOS-XR router. 

Which configuration change is required to properly enable this router as the signaling router for implementing source-based RTBH filtering? 

A. set community (no-export) in the route policy 

B. pass in the route policy 

C. set local-preference 1000 in the route policy 

D. The 192.0.2.1/32 static route should be tagged as 666 (tag 666) 

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Q6. 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 

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Q7. Which multicast routing protocol is most optimal for supporting many-to-many multicast applications? 

A. PIM-SM 

B. PIM-BIDIR 

C. MP-BGP 

D. DVMRP 

E. MSDP 

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Q8. Which of the following is a feature added in IGMPv3? 

A. Support for source filtering 

B. Support for Host Membership Report and a Leave Group message 

C. Uses a new variation of the Host Membership Query called the Group-Specific Host Membership Query 

D. Uses an election process to determine the querying router on the LAN 

E. Uses an election process to determine the designated router on the LAN 

F. IPv6 support 

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Q9. 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 

#show ip pim interface #show ip igmp group #show ip pim neighbor 

Q10. Which three statements regarding the BGP operations are correct? (Choose three) 

A. PE5 will set the local preferences 200 on all the prefixes sent to CE5 

B. PE5 will set the local preference to 200 on all the prefixes learned from CE5 

C. CE5 has received 5 prefixes from the PE5 EBGP peer 

D. CE5 has the BGP scan interval set to 30 seconds E. CE5 is announcing the 192.168.55.0/24 prefix via EBGP to the PE5 EBGP peer 

F. The AS-Path to reach the 209.165.202.128/27 prefix from CE5 is: 64500 64497 64498 

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