What is the primary function of a network switch?

The primary function of a network switch is to connect multiple computers with greater efficiency. A network switch operates at the data link layer of the OSI model, facilitating communication within a local area network (LAN). It does this by receiving incoming data packets from connected devices, examining the destination address of each packet, and forwarding the packet only to the intended recipient device. This selective forwarding process reduces unnecessary traffic on the network, improves performance, and enhances overall efficiency compared to older networking devices like hubs, which broadcast messages to all ports.

Additionally, network switches support multiple simultaneous connections and utilize MAC addresses to route the traffic intelligently, allowing for more efficient data transmission. This capability makes them essential for the seamless connectivity of multiple devices within a network, enabling faster and more reliable communication among users, applications, and services.