Which system is preferred for 802.11 WLANs that operate at speeds in excess of 11 Mbps?
A) DSSS
B) FHSS
C) OFDM
D) All are equally preferred

Question

Quizplus · Accepted Answer

OFDM (Orthogonal Frequency Division Multiplexing) is the preferred system for 802.11 WLANs that operate at speeds in excess of 11 Mbps. OFDM is a more efficient and robust modulation scheme that enables higher data rates and improved performance in multi-path environments. It is used in the 802.11a/g/n/ac standards, which support data rates up to 866.7 Mbps. DSSS (Direct Sequence Spread Spectrum) and FHSS (Frequency Hopping Spread Spectrum) are both older modulation schemes that are not suitable for high-speed WLANs.

Which System Is Preferred for 802