What type of technology allows computers to communicate wirelessly?

Bluetooth technology enables computers and various devices to communicate without the need for wires. It operates by using short-range radio frequencies to exchange data between compatible devices, allowing for connections to be established quickly and efficiently. This technology is particularly useful for connecting peripherals like keyboards, mice, headphones, and transferring files between devices.

In contrast, Ethernet is a wired technology that connects devices through cables, primarily using a network interface card and physical cabling to establish a local area network (LAN). USB is a standard for connecting peripherals to a computer, but it typically involves physical connections through cables. HDMI is a standard for transmitting high-definition video and audio signals, not for general data communication, and requires cable connections between devices. Therefore, Bluetooth stands out as the solution specifically designed for wireless communication.