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The IEEE approved a second standard in 1999. IEEE 802.11a provides a maximum 54-Mbps data rate but is incompatible with 802.11b. It provides speeds of 54, 48, 36, 24, 18, 12, 9, and 6 Mbps. IEEE 802.11a uses 13 channels of the Unlicensed National Information Infrastructure (UNII) frequencies and is incompatible with 802.11b and 802.11g. IEEE 802.11a is also known as WiFi5.


Cover of CCDA 640-864 Official Cert Guide


IEEE 802.11a