A practical Wi-Fi glossary: architecture terms (AP, controller, BSS, BSA, SSID, BSSID, ESS, DS, roaming), RF and physical-layer vocabulary, channels and spectrum, 802.11 MAC and frames, security, QoS and roaming, standards bodies and enterprise WLAN terms, plus an A–Z acronym table.
The three amendments that made Wi-Fi enterprise-ready: 802.11h DFS and TPC for coexisting with radar, 802.11e/WMM EDCA access categories and DSCP mapping for voice and video, and 802.11i RSN with its key hierarchy and 4-way handshake — plus PMF (802.11w), WPA3, Enhanced Open, and a Wireshark checklist for verifying all of it in a capture.
How 20 MHz channels are bonded into 40, 80, 160 and 320 MHz channels — primary and secondary channels, dynamic bandwidth, preamble puncturing and the capacity trade-off — followed by the 802.11 MAC header, the four address fields, and management, control and data frames with reason codes and Wireshark filters.
The foundations of Wi-Fi: who defines it (IEEE, Wi-Fi Alliance, regulators), the 802.11 generations from 802.11b to Wi-Fi 7, the 802.11 MAC and PHY, BSS/ESS architecture, CSMA/CA and the hidden node problem, how a client joins a WLAN, bands, modulation and MCS, MIMO/MU-MIMO/OFDMA, and Wi-Fi security from WEP to WPA3.