Every major Wi-Fi standard from 802.11a to Wi-Fi 7 (802.11be): frequencies, max speeds, channel widths, and key features in one glanceable reference. Perfect for Network+ wireless topics and real-world network planning. More free study resources at bytebarhq.com.
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802.11a
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5 GHz · 54 Mbps · ~35 m indoor
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802.11b
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2.4 GHz · 11 Mbps · ~38 m indoor
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802.11g
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2.4 GHz · 54 Mbps · ~38 m indoor
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802.11n (Wi-Fi 4)
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2.4 / 5 GHz · 600 Mbps · ~70 m indoor
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802.11ac (Wi-Fi 5)
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5 GHz · 3.5 Gbps · 35 m indoor
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802.11ax (Wi-Fi 6/6E)
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2.4 / 5 / 6 GHz · 9.6 Gbps · 35 m indoor
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802.11be (Wi-Fi 7)
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2.4 / 5 / 6 GHz · 46 Gbps · 35 m indoor
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Range / wall penetration
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2.4 GHz: Best · 5 GHz: Medium · 6 GHz: Worst
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Speed
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2.4 GHz: Slowest · 5 GHz: Fast · 6 GHz: Fastest
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Congestion
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2.4 GHz: Worst (only 3 non-overlapping channels) · 5 GHz: Better · 6 GHz: Cleanest
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WEP
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Broken — crackable in minutes, never use
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WPA
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Deprecated — TKIP flaws
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WPA2
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Minimum acceptable (AES-CCMP)
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WPA3
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Current standard (SAE handshake)
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MIMO
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Multiple antennas — arrived with 802.11n
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MU-MIMO
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Multiple users at once — arrived with 802.11ac
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OFDMA
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Efficient channel sharing — arrived with 802.11ax / Wi-Fi 6
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SSID
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Network name · Rogue AP = unauthorized access point (evil twin risk)
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Enterprise auth
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802.1X with RADIUS server
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