Which of the following 802.11 standards can operate at both 2.4 GHz and 5.0 GHz?

The correct answer is D. N. 802.11n (Wi-Fi 4) introduced dual-band operation, meaning it can function on both the 2.4 GHz and 5 GHz frequency bands. This gives it flexibility: 2.4 GHz offers longer range and better wall penetration, while 5 GHz offers higher speeds with less interference. 802.11a operates…

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(31 responses)

B
3% (1)
C
3% (1)
D
94% (29)

Explanation

802.11n (Wi-Fi 4) introduced dual-band operation, meaning it can function on both the 2.4 GHz and 5 GHz frequency bands. This gives it flexibility: 2.4 GHz offers longer range and better wall penetration, while 5 GHz offers higher speeds with less interference. 802.11a operates exclusively on 5 GHz. 802.11b operates exclusively on 2.4 GHz. 802.11g also operates exclusively on 2.4 GHz. The ability to operate on both bands was a key advancement introduced with 802.11n, later continued and expanded in 802.11ac (5 GHz only) and 802.11ax/Wi-Fi 6 (both bands).

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#802.11n#Wi-Fi standards#dual band#2.4GHz 5GHz

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