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WiFi - Wireless Fidelity (also known as Wireless LAN or 802.11)
is a global networking technology that enables you to connect
to the Internet at broadband speeds without the use of cables.
No plugging into phones, no looking for network connections.
To use wireless - be it a hotspot or at home you will require
a laptop or PDA with a Wi-Fi (802.11b) wireless network card.
If you're at home you can use your existing desktop
pc and a wireless reciever to pick up your broadband connection
without wires trailing the home.
The differences in standards of 802.11 are outlined
below:
Wireless Technologies
Bluetooth 802.15.1
WPAN
Up to 720Kpbs
Up to 30 feet
2.4GHz
Wi-Fi 802.11a
WLAN
Up to 54Mbps
Up to 300 feet
5GHz
Wi-Fi 802.11b
WLAN
Up to 11Mbps
Up to 300 feet
2.4GHz
Wi-Fi 802.11g
WLAN
Up to 54Mbps
Up to 300 feet
2.4GHz
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802.11
