OSPF - Open Shortest Path First

Open Shortest Path First (OSPF) is a dynamic routing protocol commonly used in large enterprise networks and the Internet. OSPF is categorized as an Interior Gateway Protocol (IGP) and is designed to efficiently exchange routing information between routers within the same autonomous system. It is based on a link-state algorithm and is known for its scalability, fast convergence, and support for variable-length subnet masking (VLSM).

The Security+ exam may cover topics related to network protocols and routing. While OSPF is primarily a routing protocol, understanding its features, operation, and basic security considerations can be relevant for exam preparation.