Which of the following statements regarding OSPF is true?
A.
OSPF does not have an acknowledgement mechanism. Therefore, OSPF relies on the upper-layer protocol, TCP, for acknowledgement.
B.
OSPF performs LSDB update every 30 minutes.
C.
OSPF uses the Bellman-Ford algorithm, and each router independently runs this algorithm.
D.
OSPF floods a LSU packet at an interval of 5s.
The Answer Is:
B
This question includes an explanation.
Explanation:
OSPF routers refresh and flood LSAs in the Link-State Database (LSDB) every 30 minutes by default to maintain topology consistency. OSPF does not rely on TCP; it uses its own acknowledgment mechanism. It also uses the Dijkstra algorithm, not Bellman-Ford. The flooding interval for LSU packets is shorter, typically 5 seconds .
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