In North America, which statement correctly compares the number of non-overlapping 20 MHz Wi-Fi channels available in the 2.4 GHz band with those available in the 5 GHz band?
About 3 non-overlapping channels exist in 2.4 GHz, while roughly 24-25 exist in 5 GHz.
All 11 channels in 2.4 GHz are non-overlapping, but only about 8 channels in 5 GHz are non-overlapping.
Approximately 14 non-overlapping channels are in 2.4 GHz, whereas 40 or more are in 5 GHz.
Around 24 non-overlapping channels are in 2.4 GHz, but only 3 exist in 5 GHz.
Because the 2.4 GHz band is only 83.5 MHz wide, channels overlap heavily; channels 1, 6, and 11 are the only three that do not overlap. The 5 GHz band spans several UNII sub-bands, giving roughly two dozen discrete 20 MHz channels (24-25 depending on regulatory domain). Therefore, the 5 GHz band offers far more non-overlapping channels, reducing co-channel interference when multiple WLANs operate in the same area.
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How do non-overlapping channels improve network performance?
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Why is the 2.4GHz band more commonly used despite having fewer channels?
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What are the specific channels available in the 5GHz band?