Name a common routing protocol used in Enterprise networks and one key characteristic.

• A. RIP; it uses hop count as metric and has slow convergence.
• B. OSPF; it is a link-state protocol that scales well for large networks.
• C. BGP; path vector for inter-domain routing.
• D. EIGRP; it uses distance-vector with rapid convergence.

Answer: (B)

OSPF is a common routing protocol used in Enterprise networks, and a key characteristic is that it is a link-state protocol designed to scale to large networks. Routers share topology information with flooding link-state advertisements, building a complete map of the network. Each router runs the SPF algorithm to compute the shortest-path tree from its location, which supports fast, loop-free convergence. Its hierarchical design uses areas (with a backbone area) to limit routing updates and reduce router workload, enabling efficient routing as the network grows. This combination—accurate topology awareness, fast convergence, and scalable structure—makes OSPF well-suited for larger enterprise environments.