802.11 is a set of wireless networking standards for local area networks using radio technologies operating in the 2.4, 3.6 and 5GHz bands. 3G refers to third generation mobile networks that provide wide-area wireless access for voice calls, mobile internet, and video calls using mobile phones. Bluetooth is a wireless technology standard for exchanging data over short distances between devices like sending photos between phones. Infrared uses short-range wireless signals to allow computing devices to communicate and transfer files or data between devices.

1. 802.11 3G
3G means 3rd generation mobile telecommu-
802.11 is a set of standards for a wireless lo-
nications. It is a generation of standards for
cal area network. Computer communication
mobile phones. 3G application services in-
can be 2.4, 3.6 and 5GHz frequency. They
clude wide-area wireless voice telephone,
were created by the IEEE LAN/MAN Stand-
mobile Internet access, video calls and mobile
ards Committee and are still maintaining it
TV. 3g is one of the most used connection
types for Mobile phones; basically every
phone has 3G.
Wireless technologies
Bluetooth
Bluetooth is an open wireless technology
standard for exchanging data over a short dis-
tance. For example, if you wanted to send
your friend a picture, you can send it via Blue-
tooth on your phone. The wavelength radio
Infrared transmissions in the ISM band from 2400-
2480 MHz from fixed and mobile devices.
Infrared is a technology that allows compu-
ting devise to communicate though short a
short range of wireless signals. With infrared,
you can transfer files or other digital data to
another device. Infrared are in many laptops
and handheld personal devices. In Microsoft
Windows, infrared connections can be creat-
ed through the same method as other local
area network connections