What is a network router?

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What is a network router?

A network router is a device that connects multiple computer networks together and forwards data packets between them. It operates at the network layer (Layer 3) of the OSI model and uses routing tables to determine the best path for data transmission. Routers are responsible for directing network traffic, ensuring efficient and secure communication between different networks. They can be used in both local area networks (LANs) and wide area networks (WANs) to enable connectivity and facilitate the exchange of information between devices and networks.