What is the function of a router's routing table?

A router's routing table is essential for directing traffic within a network. Its primary function is to determine the best paths for forwarding packets from one network to another. The routing table contains a list of routes, which include destination addresses and the associated next-hop addresses or interface information that guides the router on where to send packets.

When a packet arrives at a router, the device checks its routing table to find the most efficient path based on various metrics, such as the number of hops or path cost. This process ensures that data is transmitted efficiently and reaches its intended destination.

The other options discuss functions unrelated to the primary task of a router:

• Maintaining user sessions is typical for devices like firewalls or application servers rather than routers.

• Storing application data is a function associated with databases or file servers.

• Providing status updates on network devices falls under the responsibilities of network management tools, not routers themselves.

Thus, the routing table's core purpose in a router is to facilitate the routing of data packets, ensuring they travel along the most effective paths to their final destinations.