BGP Message Types JN0-352 Practice Questions (Page 4)

Questions 16–20

1. 16expert · hard

   A BGP session is established with a negotiated hold time of 60 seconds. The router is configured to send KEEPALIVE messages every 20 seconds. However, the peer is experiencing network congestion and is not receiving the KEEPALIVE messages. What is the most likely outcome?

   • AThe router will send a NOTIFICATION to the peer to reset the session
   • BThe router will increase the KEEPALIVE interval to reduce congestion
   • CThe session will terminate after 60 seconds if no messages are received
   • DThe session will continue because the KEEPALIVE interval is less than the hold time
   Reveal Solution Discussion Select an answer first
2. 17application · medium

   A BGP session is established with a hold time of 30 seconds. The router is configured to send KEEPALIVE messages every 10 seconds. What is the purpose of sending KEEPALIVE messages at this interval?

   • ATo negotiate the hold time with the peer
   • BTo detect network congestion
   • CTo advertise routes to the peer
   • DTo ensure the peer receives a message before the hold timer expires
   Reveal Solution Discussion Select an answer first
4. 18application · medium

   A BGP router receives a NOTIFICATION message with error code 2 (OPEN Message Error) and subcode 2 (Bad Peer AS). What is the most likely cause of this NOTIFICATION?

   • AThe hold time in the OPEN message is too short
   • BThe OPEN message was malformed
   • CThe AS number in the OPEN message does not match the configured peer AS
   • DThe BGP version in the OPEN message is unsupported
   Reveal Solution Discussion Select an answer first
5. 19application · medium

   A network administrator notices that a BGP session between two routers is repeatedly flapping. After enabling BGP tracing, the administrator sees that a NOTIFICATION message is being sent with error code 6 (Cease) and subcode 4 (Administrative Reset). What is the most likely cause of this behavior?

   • AAn administrator manually reset the BGP session
   • BThe OPEN message had an unsupported BGP version
   • CThe hold timer expired because KEEPALIVE messages were not received
   • DThe UPDATE message contained an invalid next-hop attribute
   Reveal Solution Discussion Select an answer first
6. 20application · medium

   A BGP router needs to withdraw a previously advertised prefix from a peer. What is the correct way to accomplish this?

   • ASend an UPDATE message with the prefix in the withdrawn routes field
   • BSend an OPEN message with the prefix in the capabilities field
   • CSend a KEEPALIVE message with the prefix information
   • DSend a NOTIFICATION message to terminate the session
   Reveal Solution Discussion Select an answer first