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Implementing and Operating Cisco Enterprise Network Core Technologies (ENCOR) · Cisco
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Wi‑Fi 6 (802.11ax) introduced several major enhancements, and one of the key new features is: ✅ OFDMA (Orthogonal Frequency Division Multiple Access) Supports both uplink and downlink Allows multiple clients to transmit simultaneously using subdivided channels Improves efficiency, latency, and performance in dense environments
It's important to note the difference between OFDM and OFDMA: - OFDM: Means using different sub-signals in the spectrum for THE SAME user, introduced in Wi-Fi 2 (802.11a) and being used in all following standards. - OFDMA: Means using different sub-signals in the spectrum for DIFFERENT USERS at the same time, introduced in Wi-Fi 6 (802.11ax).
Also Wi-Fi Protected Access 3 (WPA3) is available in Wi-Fi 6 and is mandatory for Wi-Fi 6E. WPA3 adds more robust 192-bit encryption, providing consistent cryptography and helping eliminate the "mixing and matching of security protocols"that are defined in the 802.11 standard. Additionally, WPA3 requires Protected Management Frames (PMF) negotiation. PMF provides an additional layer of protection from deauthentication and disassociation attacks. So there should be two correct answers to this question