Wi-Fi
9 questions
How to improve Wi-Fi signal?
•Place the router in the center.
•Raise it higher, without obstacles.
•Change the channel if there is interference.
•Update the firmware.
•Use 5 GHz for speed, 2.4 GHz for range.
What is the difference between 2.4 GHz and 5 GHz?
•2.4 GHz — farther, better through walls, slower.
•5 GHz — faster, shorter radius, more channels.
•Wi-Fi 6 works on both.
•For video and gaming — 5 GHz.
•For IoT devices — 2.4 GHz.
How to protect Wi-Fi?
•WPA3 or WPA2 (not WEP/WPA).
•Complex password.
•Disable WPS.
•Hide SSID (not very effective).
•MAC filtering (bypassable).
•Guest network for visitors.
What is Wi-Fi 6 (802.11ax)?
•New Wi-Fi standard.
•Higher speed, especially with many devices.
•OFDMA — more efficient in crowded places.
•Target Wake Time — battery saving.
•Backward compatible with Wi-Fi 5.
What is Mesh Wi-Fi?
•Multiple access points in a single network.
•Seamless roaming between points.
•Coverage of a large area.
•Eero, Google Nest, TP-Link Deco.
•Simpler than repeaters, more reliable.
Wi-Fi: how to choose a router and standards (Wi‑Fi 5/6/6E/7)?
Start with the requirements on the topic 'Wi-Fi': what should work, what are the limitations in terms of budget/performance/security. Then choose a solution.
Wi-Fi: how to select a channel and channel width for stability?
Practice for 'Wi-Fi': create a checklist (installation, setup, backup, updates) and go through it once — this reduces the number of 'mystical' problems.
Wi-Fi: how to set up a guest network and device isolation?
Answer on 'Wi-Fi': updates and backups are more important than fine-tuning. Automate backups and enable 2FA.
Wi-Fi: how to measure coverage and where to place mesh nodes/repeaters?
For 'Wi-Fi': it is useful to find the original source (documentation, release notes) and reproduce the problem with a minimal example.