802.11 and Its Variations
Generally, the core 802.11 standard is intended to specify a way for computers to network using the 2.4GHz and 5GHz free spectrums I just explained. (When computers network, it is said that they are forming a local area network, or LAN. When computers network wirelessly, it is called a Wireless LAN, or WLAN.)
The 802.11b Standard
The 802.11b subset of the general 802.11 standard is yesterday's version of Wi-Fi, but it is the wireless networking technology still most generally in use and the least expensive technology you can buy today. (By the time I write the second edition of this book, 802.11b will probably be history, 802.11g will probably be the inexpensive technology, and newer standards will be cutting edge!) ...
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