How does WiFi work?

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WiFi is a technology that uses radio waves to provide network connectivity and to transmit information across a network.

Sending data from a computer to the internet

The computer should include a wireless adapter that will translate data sent into a radio signal. This same signal will be transmitted, via an antenna, to a decoder known as the router. Once decoded, the data will be sent to the Internet through a wired Ethernet connection.

Receiving data from the internet

As the wireless network works as a two-way traffic, the data received from the internet will also pass through the router to be coded into a radio signal that will be received by the computer’s wireless adapter.

A WiFi connection is established using a wireless adapter to create hotspots.

The term hotspot is used to define an area where WiFi access is available. It can either be through a closed wireless network at home or in public places.

Source: CCM