Which technology is commonly used to connect wireless devices to a network?

The correct choice is Wi-Fi, as it is the standard technology specifically designed to connect wireless devices to networks. Wi-Fi operates through radio waves, allowing devices such as smartphones, laptops, and tablets to connect to the internet and communicate with other devices without the need for physical cables. This wireless communication enables flexibility and mobility, which are critical in modern network environments.

Ethernet primarily serves as a wired networking technology, utilizing cables to connect devices directly to a network. While it is reliable and widely used in local area networks (LANs), it does not provide the wireless capabilities that Wi-Fi offers.

Fiber optics and coaxial cable are both types of physical media used for transmitting data, but they typically serve to connect the network infrastructure rather than to connect individual wireless devices. Fiber optics can provide very high data speeds over long distances, while coaxial cable is often used for cable television and broadband internet but does not facilitate direct wireless connections.