Question

Orthogonal Frequency Division Multiplexing (OFDM) is a wireless LAN (WLAN) transmission method. Which three of the following WLAN standards support OFDM?

a) 802.11a
b) 802.11b
c) 802.11g
d) 802.11n

Answer 1

The three WLAN standards that support OFDM are 802.11a, 802.11g, and 802.11n, each operating in different frequency bands and offering different features.

Step-by-step explanation:

The three WLAN standards that support Orthogonal Frequency Division Multiplexing (OFDM) are 802.11a, 802.11g, and 802.11n.

802.11a operates in the 5 GHz frequency band and provides higher data rates compared to 802.11b.

802.11g operates in the 2.4 GHz frequency band and is backward compatible with 802.11b, while also offering higher data rates. 802.11n operates in both the 2.4 GHz and 5 GHz bands, and it uses multiple antennas and spatial multiplexing to achieve higher data rates and better coverage.