Exam Code: 4A0-102 (Practice Exam Latest Test Questions VCE PDF)
Exam Name: Alcatel-Lucent Border Gateway Protocol
Certification Provider: Alcatel-Lucent
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Q21. Click the exhibit.
AS 65550 owns CIDR block 10.64.0.0/12. Router R6 advertises the aggregate 10.64.0.0/12 to AS65541 with "as-set" enabled. Which of the following is TRUE regarding the aggregate routereceived by router R7?
A. The AS Path is set to 65540, and the Atomic Aggregate flag is set.
B. The AS Path is set to 65540 65550, and the Atomic Aggregate flag is set.
C. The AS Path is set to 65540 65550, and the Atomic Aggregate flag is not set.
D. The AS Path is set to 65550, and the Atomic Aggregate flag is not set.
Answer: C
Q22. Click the exhibit.
Router R6 is a route reflector with clients R1, R2 and R5. Router R3 advertises the prefix192.168.1.0/27 to routers R1, R2 and R5. How many routes for prefix 192.168.1.0/27 will routerR6 receive?
A. 1
B. 2
C. 3
D. None
Answer: C
Q23. Which of the following regarding BGP confederations is FALSE?
A. The entire confederation is viewed as a single AS by an eBGP peer.
B. Within a confederation, each member AS is considered as a stand-alone AS.
C. Member ASs within a confederation can use route reflection.
D. Member ASs must be fully meshed within a confederation.
Answer: D
Q24. Two Alcatel-Lucent 7750 SRs are established BGP peers with the following add-pathsconfiguration:
R1: configure router bgp add-paths ipv4 send 4 receive
R2: configure router bgp add-paths ipv4 send 2
If router R1 advertises three routes for a given prefix X, how many routes is router R2 expected tohave for prefix X?
A. None
B. 2
C. 3
D. 4
Answer: C
Q25. A router in AS 65100 receives three routes for 138.120.0.0/16. The first route has an AS Path of65200 65400 65300 and a local preference of 150. The second route has an AS Path of 6520065300 and a local preference of 100. The third route has an AS Path of 65600 65300 and a localpreference of 100. Which route will appear in the RIB-out?
A. Only the first route will appear in the RIB-Out.
B. Only the second route will appear in the RIB-Out.
C. Only the third route will appear in the RIB-Out.
D. All routes will appear in the RIB-Out.
Answer: A
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Q26. Click the exhibit.
Assume all router-IDs are properly configured, and link-local IPv6 addresses are used toestablishthe eBGP sessions. Which of the following is the MINIMAL configuration required on router A sothat router B can exchange traffic with router D?
A. Option A
B. Option B
C. Option C
D. Option D
Answer: C
Q27. Click the exhibit.
Router R3 is configured with an import policy to reject updates with an AS Path matching theregular expression ".+ 65540". Which of the following regarding updates originating in AS 65540 isTRUE?
A. Router R3 rejects all updates originating in AS 65540.
B. Router R3 accepts updates received from router R1 and rejects updates transited throughrouter R2.
C. Router R3 accepts updates transited through router R2 and rejects updates received fromrouter R1.
D. Router R3 accepts updates from both routers R1 and R2.
Answer: B
Q28. Click the exhibit.
Router R6 is a route reflector for clients R1, R2 and R5 with local preferences 100, 200 and 500respectively. Router R3 advertises prefix 192.168.1.0/27 to routers R1, R2 and R5 which areconfigured with advertise-external. Routers R4 and R6 are both configured with "add-paths ipv4send 2 receive". Which routes to 192.168.0.1/27 is router R4 expected to have in its BGP routingtable?
A. The routes from routers R1, R2 and R5.
B. The routes from routers R1and R2.
C. The routes from routers R2 and R5.
D. Two routes are chosen at random and advertised to router R4.
Answer: C
28. A router receives two routes from its neighbors: a route from OSPF for 10.0.0.0/24, and a routefrom BGP for 10.0.0.0/8. Both routes have reachable next hops. Which of the following isTRUE?
A. Only the BGP route is in the route table.
B. Both routes are in the route table.
C. None of the routes is in the route table.
D. Only the OSPF route is in the route table.
Answer: B
Q29. Click the exhibit.
Routers RR1 and RR2 are route reflectors with the same cluster-ID. How many updates for prefix192.168.1.0/27 are received at router RR1?
A. 1
B. 2
C. 3
D. 4
Answer: A
Q30. Which of the following regarding the atomic aggregate attribute is TRUE?
A. It is an optional transitive attribute.
B. It is an optional non-transitive attribute.
C. The atomic aggregate flag is always set if the aggregator attribute is set.
D. The atomic aggregate flag is always set if the AS Path information is lost due to aggregation.
Answer: D