Wireless Network Adapter Users’ Guide
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802.11a     An extension to 802.11 WLAN standards 
that provides up to 54 Mbps transmission 
in the 5 GHz UNI radio band. 
802.11b        An extension to 802.11 WLAN standard 
that provides up to 11 Mbps transmission 
in the 2.4 GHz ISM radio band. 802.11b 
uses DSSS modulation. 
802.11g  An extension to 802.11 WLAN standard 
that provides up to 54 Mbps transmission 
in the 2.4 GHz ISM radio band. 802.11b 
uses OFDM modulation and is backwards 
compatible with 802.11b. 
WEP  Wired Equivalent Privacy. A security 
protocol for WLANs defined in the IEEE 
802.11 standard. 
WPA    Wireless Protected Access ˈ  adopts rotating 
keys.  
ICS  Microsoft Internet Connection Sharing enables 
multi-computer to share access to Internet via one PC.