Wi-Fi, short for Wireless Fidelity, is a wireless communication technology that allows devices to connect to the internet and communicate with each other over a local area network (LAN) without the need for physical cables.
Wireless Access Points: Wi-Fi networks are created and managed through wireless access points (APs). These APs serve as the connection points for devices to join the network.
Radio Frequencies: Wi-Fi operates on radio frequencies, typically in the 2.4 GHz and 5 GHz bands, using IEEE 802.11 standards. This technology allows for data transmission over the airwaves.
Wireless Encryption: To secure Wi-Fi networks, encryption protocols like WEP, WPA, and WPA2/WPA3 are used to protect data from unauthorized access. Passwords and network keys are often required for access.
Range and Speed: Wi-Fi networks have varying ranges and speeds, depending on the Wi-Fi standard used (e.g., 802.11n, 802.11ac, 802.11ax). Range can extend from a few meters to hundreds of meters.
Ubiquitous Use: Wi-Fi is widely used in homes, businesses, schools, public places, and transportation hubs, providing wireless internet access to an array of devices, including smartphones, laptops, tablets, and IoT devices.
Interference: Wi-Fi networks can experience interference from other electronic devices, neighboring networks, and physical obstacles, which can affect signal quality and speed.