What is the primary function of a router?

The primary function of a router is to send packets to the correct destination. Routers operate at the network layer of the OSI model and are responsible for determining the best path for data to travel across interconnected networks. They examine packet headers to identify the destination IP addresses and use routing tables and protocols to make decisions on where to forward the packets. This process enables efficient and accurate communication between different networks and devices, ensuring that the data reaches its intended destination in a timely manner.

While other devices and systems may perform tasks like data storage, network traffic monitoring, or data encryption, these functions are not the main responsibilities of a router. Instead, the router's core purpose lies in directing network traffic and managing the flow of information across networks, making accurate packet delivery its primary function.