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Cisco CCIP 642-661 Practice Exam (71-75)

How do BGP confederations reduce the requirements for a full-mesh iBGP configuration?
A. By splitting the autonomous system into a number of smaller autonomous systems and using iBGP sessions among them.
B. By modifying the iBGP split horizon rule.
C. By modifying the eBGP split horizon rule.
D. The combining multiple IBGP sessions into a single IBGP session over loopback interface.
Answer: A

Which two commands scenarios will alter the BGP weight attribute to 120? (Choose two) A. R(config-route-map)# set weight 120
B. R(config-router)# neighbor ip-address weight 120
C. R(config-router)# bgp default weight 120
D. R(config-router)# neighbor ip-address prefix-list test in weight 120
Answer: A,B

Which one of the following as-path access-lists will match routes which last came from BGP confederation member-AS 65111?
A. router(config)#ip as-path access-list 1 permit ^(65111_
B. router(config)#ip as-path access-list 1 permit ^65111_
C. router(config)#ip as-path access-list 1 permit ^\(65111_
D. router(config)#ip as-path access-list 1 permit _65111_
E. router(config)#ip as-path access-list 1 permit (65111_
Answer: C

What is a difference between using the network command vs. the aggregate-address command to perform route aggregation and summarization?
A. The network command has more configuration options.
B. The aggregate-address command has the option to suppress some of the more specific routes.
C. The aggregate-address command can summarize routes learned from other routing protocols besides BGP.
D. The network command requires the more specific routes to be in the BGP table.
E. The network command always requires the configuration of a static route pointing to the null interface.
Answer: B

Refer to the exhibit. Which two statements are correct? (Choose two.)
A. The AS path is not manipulated when advertising a route to an IBGP peer; the local AS is added to the AS path only when advertising a route to an EBGP peer.
B. Routers C and D will redistribute all the BGP prefixes into an IGP to make routing more scalable within AS 200.
C. The routers within AS 200 are EBGP peers because this is not a full mesh implementation.
D. When router D announces a prefix learned from AS 100 to router B, the next-hop will be changed to the IP address of router C (the interface that connects to router D).
E. The routers within AS 200 are IBGP peers; routes learned from an IBGP peer are not generally advertised to other IBGP peers.
Answer: A,E

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