What is the primary function of a router in networking?

The primary function of a router in networking is to connect different networks together. Routers play a crucial role in directing data packets between different networks either within a single organization or between different organizations. They determine the best path for data to travel across the various interconnected networks, allowing devices on different networks to communicate with each other effectively.

This function differentiates routers from other networking devices such as switches, which operate primarily within a local area network (LAN) and manage traffic between devices within that same network, and wireless access points, which provide access to a network without physical connections. By connecting diverse networks and facilitating communication, routers enable the exchange of information across different network architectures and protocols, serving as a vital component in larger network infrastructure.