How a router stores computer addresses?

A router stores computer addresses in a data structure called a routing table, which contains entries for network destinations and the corresponding next-hop addresses or interfaces to reach those destinations. The routing table is populated through various methods, including static configurations and dynamic protocols like RIP, OSPF, or BGP, which allow routers to exchange information about network topology. Each entry typically includes the destination IP address, subnet mask, and the metric or cost associated with the route. This enables the router to efficiently forward packets to their intended destinations.