What role do routers serve in a network?

Routers play a crucial role in a network by directing data packets between different interconnected networks. Their primary function is to receive incoming data packets and determine the most efficient path for those packets to reach their destination. By examining the destination IP address contained in the packet, the router uses its routing table and protocols to manage the best route for the data to travel, ensuring that the information is sent to the correct location.

This process of routing involves not just forwarding packets from one network to another but also managing traffic and optimizing network performance. Routers make decisions based on various factors, including network conditions and policies, contributing significantly to the overall efficiency of communication within and between networks. This functionality distinguishes routers from other network devices, which may perform different roles such as amplifying signals, securing communications, or managing user access rights.