Which two events will trigger the sending of a link-state packet by a link-state routing protocol? (Choose two.)

Which two events will trigger the sending of a link-state packet by a link-state routing protocol? (Choose two.)

• the router update timer expiring
• a link to a neighbor router has become congested
• a change in the topology
• the initial startup of the routing protocol process
• the requirement to periodically flood link-state packets to all neighbors

Explanation: An LSP (link-state packet) is only sent during initial startup of the routing protocol process on a router; and whenever there is a change in the topology, including a link going down or coming up, or a neighbor adjacency being established or broken. Data traffic congestion does not directly influence routing protocol behavior. LSPs are not flooded periodically, and update timers are not relevant to LSPs.

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