Wi-Fi (from Wireless fidelity) is a wireless networking technology that uses radio waves to transmit data over short distances. It is the most common way to connect to the Internet wirelessly, and is increasingly being used to connect devices within homes and businesses. It uses two different radio frequencies, 2.4 GHz and 5 GHz, to provide speed and range.

Wi-Fi has become widely available since the late 1990s, and is now available in locations such as homes, businesses, public spaces, and on planes and trains. The technology is also used to access resources on the Internet through mobile devices such as smartphones and tablets.

Using Wi-Fi, users can access the Internet without their devices being connected to another device or router via wires—they simply need to be within range of the router in order to connect. This gives users the freedom to move around while they are connected to the Internet. It also saves them money, as they don’t need to pay for the long cables that are used to connect physical networking devices.

Wi-Fi has made it easy to access the Internet at any time and from almost any place. It is becoming increasingly popular with businesses as it allows them to create wireless networks which enable their employees to access the Internet and communicate with one another quickly and easily.

Although Wi-Fi is widely available, it does have its limits. It doesn’t work over larger distances, and it can be slower than wired networking options. In addition, it is vulnerable to interference from other wireless devices and can be easily hacked if not properly secured.

Therefore, it is important to choose the right Wi-Fi system for your needs and to secure it properly. For home users, this includes setting a strong password and using encryption, while for businesses, it involves using a secure, enterprise-grade Wi-Fi system.

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