A Review Of Precise 642-883 exam question

Q1. The Cisco IOS XE Software summary-address router IS-IS configuration command can be used to send a summarized route into which IS-IS hierarchy? 

A. Level 1 only 

B. Level 2 only 

C. Level-1-2 only 

D. Level 1 or Level 2 or Level-1-2 

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Q2. Which AS path access list is used by a multihomed customer to only announce their own address space to their service providers to prevent the multihomed customer from becoming a transit AS? 

A. ip as-path access-list permit.* 

B. ip as-path access-list permit^$ 

C. ip as-path access-list permit _$ 

D. ip as-path access-list permit _^ 

E. ip as-path access-list permit local-as ip as-path access-list deny * 

F. ip as-path access-list deny.* ip as-path access-list permit * 

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Q3. A network specialist is working for a large enterprise that has a BGP-enabled multihomed core infrastructure. Recently, the ISP that provides Internet connectivity to the company had to temporarily disable one of the BGP sessions as a result of routers blackholing BGP prefixes in transit. Which option can the specialist use to avoid this incident in the future? 

A. filtering local prefixes outbound 

B. using only one router as primary BGP speaker 

C. permitting only local prefixes outbound 

D. filtering external prefixes inbound 

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Q4. A network engineer is configuring IS-IS in Cisco IOS XR. Where is BFD configured? 

A. RP/0/RSP0/CPU0:router(config-isis-if)# 

B. RP/0/RSP0/CPU0:router(config)# 

C. RP/0/RSP0/CPU0:router(config-bfd)# 

D. RP/0/RSP0/CPU0:router(config-isis-if-af)# 

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Q5. A network engineer wants to test a path between any two points in the network for multicast traffic to identify congestion points in the network. Which command in a Cisco IOS XE router shows multicast traffic drops? 

A. mstat 

B. mtrace 

C. mrinfo 

D. ping 

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Q6. Refer to the OSPF command exhibit. 

Which effect does the no-summary command option have? 

A. It will cause area 1 to be able to receive non-summarized inter-area routes. 

B. It will cause area 1 to not receive any inter-area routes and will use a default route to reach networks in other areas. 

C. It will cause area 1 to not receive any external routes and will use a default route to reach the external networks. 

D. It will convert the NSSA area into a NSSA totally stubby area. 

E. It will convert the stubby area into a NSSA. 

F. It will disable OSPF auto-summary. 

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Q7. Which three statements are correct regarding the OSPF operations? line (Choose three.) 

A. PE5 OSPFv2 and OSPFv3 router id is 10.5.1.1 

B. The OSPF virtual-link cost is 1 

C. Area 3 is a transit area 

D. Area 4 is using MD5 authentication 

E. Area 1 IPv4 and IPv6 networks are not reachable from PE6 

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Q8. Which BGP attribute is a set of generic tags that can be used to signal various routing policies between BGP routers? 

A. AS path 

B. MED 

C. weight 

D. communities 

E. route tags 

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Q9. Under which two conditions does an enterprise require BGP peering with its upstream Internet provider? (Choose two.) 

A. The enterprise has two exit points that are geographically separated and routing must be controlled so that delay variations are reduced. 

B. The enterprise has one exit point and must announce the IP class it has been assigned from its ISP. 

C. The enterprise has two Layer 2 links to the upstream ISP in the same location and wants to achieve redundancy. 

D. The enterprise needs a simple and efficient way to ensure proper routing for its AP subnets on its single ISP link. 

E. The enterprise is multihomed to two ISPs and has its own IP space AS number. 

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Q10. Which option is a tool that is used to ensure that BGP AS does not become a transit AS? 

A. as-path filter-list 

B. local-preference 

C. ttl-security 

D. confederations 

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