What are the different types of wireless network technologies?

Currently there are three options: 802.11b, 802.11a, and 802.11g. The sections below compare these technologies.

802.11b

Speed :Up to 11 megabits per second (Mbps)

Costs the least Has the best signal range

Has the slowest transmission speed

Allows for fewer simultaneous users

Uses the 2.4 gigahertz (GHz) frequency (the same as many microwave ovens, cordless phones, and other appliances), which can cause interference


802.11a

Speed:Up to 54 Mbps

Has the fastest transmission speed

Allows for more simultaneous users
Uses the 5 GHz frequency, which limits interference from other devices

Costs the most


Has a shorter signal range, which is more easily obstructed by walls and other obstacles

Is not compatible with 802.11b network adapters, routers, and access points


802.11g

Speed: Up to 54 Mbps


Has a transmission speed comparable to 802.11a under optimal conditions

Allows for more simultaneous users

Has the best signal range and is not easily obstructed

Is compatible with 802.11b network adapters, routers, and access points


Uses the 2.4 GHz frequency so it has the same interference problems as 802.11b

Costs more than 802.11b

If you have more than one wireless network adapter in your computer or if your adapter uses more than one standard, you can specify which adapter or standard to use for each network connection. For example, if you have a computer that you use for streaming media, such as videos or music, to other computers on your network , you should set it up to use the 802.11a connection, if available, because you will get a faster data transfer rate when you watch videos or listen to music.