Networking Fundamentals — Question 79

Which IEEE 802.11 Wi-Fi networking standard requires dual antennas so it can run in all of its supported frequencies?

Answer options

• A. 802.11a
• B. 802.11b
• C. 802.11g
• D. 802.11n

Correct answer: D

Explanation

The correct answer is D, 802.11n, as this standard supports multiple input and multiple output (MIMO) technology, which requires dual antennas to enhance performance over both 2.4 GHz and 5 GHz bands. The other standards, 802.11a, 802.11b, and 802.11g, do not necessitate dual antennas and operate effectively with a single antenna.