A router is a networking device that sends data in the form of data packets between different computers or IP networks. The main goal of a router is to connect with multiple networks and transfer data packets from those networks to other directly attached or remote networks. It comes in Layer 3, the Network Layer of the OSI network layer model.

Routers are commonly used in homes, businesses, and on the internet to manage network traffic and keep data flowing smoothly. They can be wired or wireless and can be used to connect devices such as computers, printers, smartphones, and tablets. Some routers also come with additional features such as firewalls, VPNs, and parental controls.

BY Best Interview Question ON 14 Mar 2023