Free 4A0-102 Exam Braindumps
4A0-102 Alcatel-Lucent Border Gateway Protocol Questions 51–55 (page: 12)

Updated On: 9-Feb-2026

Click the exhibit.


Routers RR1 and RR2 are route reflectors with the same Cluster-ID. When the update for prefix 192.168.1.0/27 is received at router RA2, what are the Originator_ID and Cluster_List attributes?

  1. Originator_ID of RR1; and Cluster_List of 10.16.10.1.
  2. Originator_ID of RX; and Cluster_List of 10.16.10.1.
  3. Originator_ID of RR1; and the Cluster_List is not set.
  4. Neither the Originator_ID nor the Cluster_List is set.

Answer(s): D



Click the exhibit.

Router R6 is a route reflector for clients R1, R2 and R5 with local preferences 100, 200 and 500 respectively. Router R3 advertises prefix 192.168.1.0/27 to routers R1, R2 and R5 which are configured with advertise- external. Routers R4 and R6 are both configured with "add-paths ipv4 send 2 receive". Which routes to 192.168.0.1/27 is router R4 expected to have in its BGP routing table?

  1. The routes from routers R1, R2 and R5.
  2. The routes from routers R1and R2.
  3. The routes from routers R2 and R5.
  4. Two routes are chosen at random and advertised to router R4.

Answer(s): C



Which of the following best describes the purpose of advertise-external?

  1. It enables a BGP speaker to advertise multiple external routes to iBGP peers.
  2. It enables a BGP speaker to advertise its best external route to iBGP peers when the best overall route is internal.
  3. It enables a BGP speaker to advertise its best external route to eBGP peers without an import policy.
  4. It enables a BGP speaker to advertise its best internal route to eBGP peers without an export policy.

Answer(s): B



Click the exhibit.

Router R6 is a route reflector with clients R1, R2, R4 and R5. R4 receives three routes from router R6 and is configured with ECMP 3. Given the following BGP configuration on router R4, how many primary and backup paths will be present in router R4's BGP routing table?

  1. Two primary paths and one backup path.
  2. One primary path and two backup paths.
  3. Three primary path and one backup path,
  4. Three primary paths.

Answer(s): D



Click the exhibit.

Router R1 is a route reflector with clients R2, R5 and R6. Prefixes advertised by router R5 have a local preference of 200. Router R3 advertises the prefix 192.168.1.0/27 to routers R5 and R6.
Assuming that router R6 is configured with "advertise-external", what is the expected output of "show router bgp routes" when executed on router R5?

  1. Option A
  2. Option B
  3. Option C
  4. Option D

Answer(s): C



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