What is routing algorithm used by OSPF routing protocol?
(A) Distance vector
(C) Path vector
(D) Link state
Explanation: Open Shortest Path First (OSPF) is a link-state routing protocol which is a network layer protocol and uses Link State Routing method to calculate the shortest route to a destination through a network based on an algorithm. It falls into the group of IGP (Interior Gateway Protocol).
So, option (D) is correct.
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