Cheatography
https://cheatography.com
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.
Standards Table
802.11a |
5 GHz · 54 Mbps · ~35 m indoor |
802.11b |
2.4 GHz · 11 Mbps · ~38 m indoor |
802.11g |
2.4 GHz · 54 Mbps · ~38 m indoor |
802.11n (Wi-Fi 4) |
2.4 / 5 GHz · 600 Mbps · ~70 m indoor |
802.11ac (Wi-Fi 5) |
5 GHz · 3.5 Gbps · 35 m indoor |
802.11ax (Wi-Fi 6/6E) |
2.4 / 5 / 6 GHz · 9.6 Gbps · 35 m indoor |
802.11be (Wi-Fi 7) |
2.4 / 5 / 6 GHz · 46 Gbps · 35 m indoor |
Frequencies, speeds, and ranges — Network+ and CCNA wireless in one page.
2.4 GHz vs 5 GHz vs 6 GHz
Range / wall penetration |
2.4 GHz: Best · 5 GHz: Medium · 6 GHz: Worst |
Speed |
2.4 GHz: Slowest · 5 GHz: Fast · 6 GHz: Fastest |
Congestion |
2.4 GHz: Worst (only 3 non-overlapping channels) · 5 GHz: Better · 6 GHz: Cleanest |
Non-overlapping 2.4 GHz channels: 1, 6, 11 (US) — exam favorite.
Wireless Security
WEP |
Broken — crackable in minutes, never use |
WPA |
Deprecated — TKIP flaws |
WPA2 |
Minimum acceptable (AES-CCMP) |
WPA3 |
Current standard (SAE handshake) |
Oldest → newest. Know the order.
Quick Exam Hits
MIMO |
Multiple antennas — arrived with 802.11n |
MU-MIMO |
Multiple users at once — arrived with 802.11ac |
OFDMA |
Efficient channel sharing — arrived with 802.11ax / Wi-Fi 6 |
SSID |
Network name · Rogue AP = unauthorized access point (evil twin risk) |
Enterprise auth |
802.1X with RADIUS server |
If you remember nothing else, remember these.
More from ByteBar
📘 Exam-ready? Practice like it's test day — the ByteBar Practice Exam Simulator: 1,000 questions per exam, $9.99 one-time for all 19 exams at bytebarhq.com
Free IT study resources and practice questions at bytebarhq.com |
Added More from ByteBar footer block with study guide CTA link.
|
Created By
Metadata
Comments
No comments yet. Add yours below!
Add a Comment
Related Cheat Sheets
More Cheat Sheets by bytebar