Wi-Fi is a wireless networking technology that allows devices to connect to the internet using radio waves instead of wired connections.

Elaboration:

• Operates on 2.4 GHz and 5 GHz frequency bands.
• Standards include 802.11a/b/g/n/ac/ax (Wi-Fi 6).
• Security protocols: WEP (weak), WPA (better), WPA2 (strong), WPA3 (latest).

Example:

A smartphone connects to the home Wi-Fi network using a router that provides internet access.