Wireless Local Area Networking
•Because Wi-Fi is unlicensed, it is free.  The 3G wireless spectrum needs to be licensed for huge fees.
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•Four of the most widely used standards for WLANs are 802.11, 802.11a, 802.11b, and 802.11g.
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•Transfer rate: the speed at which data is transmitted from an access point (or base station) to the wireless device.
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•Access point:  a hardware device with one or more antennae that permits communication between wired and wireless networks so wireless clients can send and receive data.