BGP Message Types JN0-364 Practice Questions (Page 3)

Questions 11–15

1. 11expert · medium

   A BGP session is down, and the engineer sees a NOTIFICATION message with error code 2 (OPEN Message Error) and subcode 2 (Bad Peer AS). What is the most likely cause?

   • AThe AS number in the OPEN message does not match the configured peer AS.
   • BThe version in the OPEN message is not supported.
   • CThe BGP identifier in the OPEN message is invalid.
   • DThe hold time in the OPEN message is too short.
   Reveal Solution Discussion Select an answer first
2. 12expert · medium

   A BGP session is being established, and the engineer sees the following sequence of messages: OPEN, KEEPALIVE, KEEPALIVE, UPDATE. What does this sequence indicate?

   • AThe session is established and the routers are exchanging routing information.
   • BThe session is in the Idle state.
   • CThe session is in the Established state, but no routes are being exchanged.
   • DThe session is in the OpenConfirm state.
   Reveal Solution Discussion Select an answer first
4. 13expert · medium

   A BGP speaker receives an UPDATE message with a path attribute that is marked as transitive but is not recognized. What should the BGP speaker do?

   • AIt should remove the attribute and then process the UPDATE.
   • BIt should ignore the attribute and continue processing the UPDATE.
   • CIt should accept the UPDATE and pass the attribute along to its peers.
   • DIt should send a NOTIFICATION message and terminate the session.
   Reveal Solution Discussion Select an answer first
5. 14application · medium

   A BGP session between two routers is flapping. The engineer captures packets and sees a NOTIFICATION message with error code 6 (Cease) and subcode 4 (Administrative Reset). What is the most likely reason for this NOTIFICATION?

   • AThe UPDATE message contained an invalid next hop.
   • BThe OPEN message contained an unsupported capability.
   • CThe hold time expired because KEEPALIVE messages were not received.
   • DA route policy was applied that caused the session to be reset.
   Reveal Solution Discussion Select an answer first
6. 15application · medium

   A BGP session is not establishing, and the engineer sees that the local router is sending OPEN messages but the remote router is not responding. The engineer suspects that the remote router is rejecting the OPEN message. Which field in the OPEN message is most likely causing the rejection?

   • AThe BGP identifier is set to 0.0.0.0.
   • BThe version field is set to 4.
   • CThe hold time is set to 180 seconds.
   • DThe optional parameters field is empty.
   Reveal Solution Discussion Select an answer first