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Alcatel-Lucent 4A0-102 Exam
4A0-102 Alcatel-Lucent Border Gateway Protocol (Page 5 )

Updated On: 1-Feb-2026
Page 5 of 32
PDF with 152 Questions

What will happen if an update is received with an unrecognized optional non-transitive attribute?

  1. The router will accept the update and send a notification.
  2. The router will not accept the update and send a notification.
  3. The router will accept the update and ignore the attribute.
  4. The router will accept the update and propagate the attribute.

Answer(s): C



What kind of attribute is the aggregator?

  1. Well-known mandatory
  2. Well-known discretionary
  3. Optional transitive
  4. Optional non-transitive

Answer(s): C



Click the exhibit.

Considering that both routers C and D are advertising the eBGP learned prefix 10.5.0.0/16 into ISP X, which of the following best describes the route advertisement within ISP X?

  1. Router C sends the update to routers E and F only.
  2. Router C sends the update to routers D, E and F.
  3. Router C sends the update to routers A, B, E and F.
  4. Router C sends the update to routers A, B, D, E and F.

Answer(s): D



Click the exhibit.

After router A receives the BGP update for the 10.3.3.0/24 prefix, which routers will the route be propagated to?

  1. All routers with which it has a BGP session.
  2. All routers with which it has a BGP session, except the router it received the update from, which is router
  3. All routers with which it has a BGP session, except the router it received the update from, which is router
  4. All routers with which it has a BGP session, except the router it received the update from, which is router
  5. Only eBGP neighbors.

Answer(s): E



Which of the following is TRUE if the local state of BGP is OpenConfirm?

  1. The local system has received a Keepalive message and is ready to exchange updates.
  2. The local system is exchanging Update messages with its neighbor.
  3. The local system has sent a Keepalive message to its neighbor and is waiting to receive one back.
  4. The local system has sent an Open message to its neighbor and is waiting to receive one back.

Answer(s): C



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