Pass4side Alcatel-Lucent 4A0-102 考试题库(16-20)

16. By default, if the Alcatel 7750 SR receives an update with the local AS number already in the path it will:TestInside 4A0-102A. Reject the updateB. Drop the peerC. Ignore the updateD. (a) and (b)Answer: C17. Based on the following configuration, the source IP address used for this session will be:config>router# autonomous-system 65200config>router# bgp group “External BGP”config>router>bgp>group$ description “AS 65250″config>router>bgp>group$ peer-as 65250config>router>bgp>group$ neighbor 56.0.59.2A. 56.0.59.2B. 56.0.59.3C. The system address of the local routerD. The physical interface used to reach this neighborE. UnknownF. RandomAnswer: D
18. When does the Alcatel 7750 resolve the next-hop for a route?A. The next-hop is resolved when packets need to be forwardedB. There is no need to resolve the next hop, it is known from the routing updateC. The next-hop is resolved prior to the route installation in the FIB in the fast path, in real time.D. The next-hop is periodically validated by a background processAnswer: C
19. For a BGP session to establish between the local router and 192.168.1.1, which of the following is true, basedon the following configuration?config>router>bgp# group “BGP Peers”config>router>bgp>group# authentication-key “Group”config>router>bgp>group# neighbor 192.168.1.1config>router>bgp>group>neighbor# authentication-key “Neighbor”A. The local router will use the authentication key “Group” for all peering sessions.B. The local router will use both authentication keys for extra security when communicating with neighbor192.168.1.1 since both are definedC. The configuration of neighbor 192.168.1.1 will require the authentication key “Group” since the group “BGPPeers” is defined with that keyD. The configuration of neighbor 192.168.1.1 will require the authentication key “Neighbor” since the neighbor isdefined with that keyE. All of the above statements are falseAnswer: D
20. Refer to the following configuration, which has been applied to BGP as an export policy.entry 10fromprotocol directprefix-list “SomeNets”exitaction acceptorigin incompleteexitexitentry 20fromprotocol ospfprefix-list “SomeNets”exitaction acceptTestInside 4A0-102origin igpmetric set 1700exitexitSelect the best statement below.A. This configuration is invalid since the same prefix-list is referenced twiceB. This configuration will allow all BGP routes, and direct and ospf routes that match the prefix-list. Direct andospf routes will be marked in BGP with an origin of igpC. This configuration is invalid since incomplete is not a valid origin codeD. This configuration would not allow any BGP routes to be propagated since there is no default-actionE. This configuration will allow all BGP routes, and direct and ospf routes that match the prefix-listAnswer: E
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