True or False: BGP routers use broadcast or multicast with the use of TCP

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Multiple Choice

True or False: BGP routers use broadcast or multicast with the use of TCP

Explanation:
BGP relies on TCP for transport, and each BGP session is a single TCP connection between two neighboring routers. The messages OPEN, UPDATE, KEEPALIVE, and NOTIFICATION are exchanged over that unicast TCP connection, not over IP broadcast or multicast. TCP provides the reliability and in-order delivery that BGP needs, so there’s no mechanism in standard BGP to use broadcast or multicast for its control-plane messages. If the TCP session fails, the BGP session ends and must be reestablished, which is consistent with a point-to-point, connection-oriented design rather than a shared multicast/broadcast model. Therefore, the statement is false.

BGP relies on TCP for transport, and each BGP session is a single TCP connection between two neighboring routers. The messages OPEN, UPDATE, KEEPALIVE, and NOTIFICATION are exchanged over that unicast TCP connection, not over IP broadcast or multicast. TCP provides the reliability and in-order delivery that BGP needs, so there’s no mechanism in standard BGP to use broadcast or multicast for its control-plane messages. If the TCP session fails, the BGP session ends and must be reestablished, which is consistent with a point-to-point, connection-oriented design rather than a shared multicast/broadcast model. Therefore, the statement is false.

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