Discussion
How many non-overlapping channels are available with 802.11a?
Answer: B
Correct answer: 12
802.11a has twelve non-overlapping channels in the 5 GHz U-NII bands, four times what 2.4 GHz offers. The channels there are spaced so they do not overlap at all, which makes the channel plan for a dense deployment far easier and is the main practical reason for choosing 5 GHz.
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