What role does a router play in a network?

A router plays a crucial role in a network by connecting multiple networks and forwarding data packets between them. This process is essential for enabling communication between devices on different networks, such as a home network and the internet. Routers operate at the network layer of the OSI model, determining the best paths for data packets to travel based on their destination IP addresses.

By directing traffic, routers help ensure that data packets reach their correct destinations efficiently. They utilize routing tables and protocols to make decisions on how to forward packets, optimizing network performance and reducing congestion. Additionally, routers can implement various functions such as network address translation (NAT), which allows multiple devices on a private network to access the internet using a single public IP address.

This functionality distinguishes routers from devices like amplifiers, storage devices, and wireless access points, which perform different roles in supporting network connectivity and communication.