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Technology industry veterans might remember the contentious speculation that abounded at the end of the 1990s over which short-range wireless technology would emerge supreme to carry data over radio. Two of the most heavily touted wireless technologies were Bluetooth and HomeRF. Eventually, of course, IEEE 802.11 technology convincingly eclipsed both the presumed frontrunners, to the point that "Free Wi-Fi" is a selling point in locales as varied as coffee houses, hostelries, and even barbers shops worldwide. 802.11 technology, whether it's in the 2.4-GHz b and g bands or the 2.4- and 5-GHz n technology, is the de facto and assumed technology for wireless data networks everywhere.
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