Which device is used to connect multiple computers within a local area network?

A switch is primarily used to connect multiple computers within a local area network (LAN). It operates at the data link layer of the OSI model, facilitating communication between devices by using MAC addresses to forward data only to the intended recipient within the network. This process helps reduce congestion and improves overall network efficiency.

Switches create a dedicated network path for each device, allowing simultaneous communication without collisions, which significantly enhances performance compared to other network devices. They can manage and prioritize traffic, making them essential for larger networks where multiple devices need to connect and communicate effectively.

In contrast, routers are used to connect different networks, modems provide internet connectivity and convert signals from your Internet Service Provider, while access points extend wireless coverage within a network. While all these devices play crucial roles in networking, the switch is specifically designed for connecting multiple devices within a local network, making it the most appropriate choice here.