A wireless network uses radio waves instead of cables. Devices connect without wires. They can move freely. Wireless networks are convenient. They are also shared. They are less secure. They are slower than wired in some cases. But they are essential for mobile devices.

Wireless networks come in many types. Wi-Fi covers a home or office. Cellular covers a city or country. Bluetooth covers a few meters. Satellite covers the globe. Each uses different frequencies, power levels, and protocols. Each has different range and capacity.

Wireless network types

• Wi-Fi: local, high speed
• Cellular: wide area, mobile
• Bluetooth: personal, short range
• Satellite: global, remote
• Fixed wireless: point-to-point

Wireless networks are not perfect. They are affected by walls, interference, and distance. They are shared with neighbors. They can be hacked. But they are convenient. They enable mobility. They connect devices that cannot be wired. The wireless network is the future. The wired network is the backbone.