IEEE 802.11ac operates only in the 5 GHz frequency band, unlike its predecessors 802.11n and 802.11ax which can operate in both the 2.4 GHz and 5 GHz bands.
The answer is B. True
Because .b standart for 2.4 (11 mbps), a. standart for 5 ghz (54 mbps), .g standart for 2.4 ghz (54 mbps), .n standart for 2.4 and 5 ghz (150 mbps), .ac standart for 5 ghz (1gbps) and .ax standart for 2.4 and 5 ghz (10 gbps).
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