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

The correct answer is D. n. 802.11n (Wi-Fi 4) is the first mainstream Wi-Fi standard designed to operate on both the 2.4 GHz and 5 GHz frequency bands (dual-band), providing backward compatibility with older devices while also offering the higher-throughput benefits of the 5 GHz band. 802.11a (A) operates…

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(24 responses)

B
4% (1)
C
8% (2)
D
88% (21)

Explanation

802.11n (Wi-Fi 4) is the first mainstream Wi-Fi standard designed to operate on both the 2.4 GHz and 5 GHz frequency bands (dual-band), providing backward compatibility with older devices while also offering the higher-throughput benefits of the 5 GHz band. 802.11a (A) operates exclusively on 5 GHz. 802.11b (B) operates exclusively on 2.4 GHz. 802.11g (C) operates exclusively on 2.4 GHz. This dual-band capability of 802.11n, combined with MIMO (Multiple Input Multiple Output) antenna technology, allowed it to achieve theoretical speeds up to 600 Mbps.

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#802.11n#dual-band#wireless standards#frequency bands

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