A wireless network is a computer network that uses wireless data connections between nodes. Wireless networking is a method by which homes, telecommunications networks, and business installations avoid the costly process of introducing cables into a building or location. Wireless telecommunications networks are widely used in metropolitan areas worldwide, using microwave links to relay information from one point to another.

The use of radiofrequency waves for data transmission has several advantages over other methods, such as optical fiber or coaxial cable. One advantage is that laying down cables in certain places, such as across oceans or mountains, can be difficult and expensive. A second advantage is that RF waves can penetrate walls and other obstacles that block light waves (such as infrared radiation), making them ideal for indoor use where running wires through the walls would be impractical. Additionally, RF signals do not require a clear line of sight between transmitter and receiver to work around corners and obstacles.

However, there are also some disadvantages to using wireless technologies. One downside is that RF signals can be intercepted by unauthorized users (eavesdroppers), resulting in security breaches. Another potential issue is interference from other devices operating on the same frequency, which can result in poor performance or even complete loss of service.