What is LSA's role in OSPF?

• A. Floods topology information to all routers in the area
• B. Assigns IP addresses to devices
• C. Computes the best path
• D. Negotiates hello timers

Answer: (A)

LSAs in OSPF serve to share topology information. Routers generate Link-State Advertisements that describe their own links and state, and these LSAs are flooded to every router in the same area. This flooding creates a consistent Link-State Database on all routers, providing a common view of the network topology. Once every router has this shared view, each one runs the SPF algorithm to compute the best paths. So the role of an LSA is not to compute routes, assign addresses, or negotiate timers—it's to disseminate topology details to all area routers.