JNCIP-ENT: Juniper Networks Certified Professional – Enterprise Routing (2024) — Question 59

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

Answer options

• 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.

Correct answer: C

Explanation

The correct answer is C because OSPF uses acknowledgments to confirm that LSAs have been received by neighboring routers. Option A is incorrect as LSA flooding does not guarantee receipt; it only disseminates LSAs. Option B is wrong because OSPF uses UDP, not TCP, for LSA transmission. Option D is also incorrect since LSAs do not include an acknowledgment bit.