JN0-649: Enterprise Routing and Switching, Professional (JNCIP-ENT)Demo

By Juniper · Question Mode

QuestionQ24

Interior Gateway Protocols (IGPs)

In OSPF, how does a router make sure that LSAs advertised to a neighboring router are received?

  • A LSA flooding guarantees that all routers will receive them successfully.
  • B LSAs are sent over a TCP connection.
  • C LSAs are acknowledged by the neighboring router.
  • D LSAs are advertised with an acknowledgement bit.
Explanation

OSPF makes LSA flooding reliable by having the receiving neighbor acknowledge flooded LSAs with Link State Acknowledgment packets. The sender can retransmit an LSA if the required acknowledgment is not received.

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