Why use wireless? Networks are evolving to support people on the move Many different infastructures (wired LAN, service providers) allow mobility. Productivity is no longer restricted to a fixed work location or a defined time period. WLAN's reduce cost. COMPARING WLAN to a LAN The dominant IEEE 802 groups are 802.3 & 802.11 However there are important differences between the two Radio Frequency has no boundaries like a wire so data frames travel to anyone that can receive Radio Frequency signals. Radio Frequency is un protected from outside signals. Radio Frequency has some unique challenges, The further from the source the weaker the transmission. Radio Frequency bands are regulated differently in different countries. In a wireless topology a wireless AP can be used instead of a switch.
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