Wi-Fi fundamentals
Bands, channels, signal strength and security: enough to plan small sites and troubleshoot 'the Wi-Fi is bad'.
- Level
- Beginner
- Length
- About 40 minutes
- Contents
- 3 lessons · 1 video · final exam
- Status
- Published · updated 1 Oct 2026
Skills you'll practise
- Compare 2.4, 5 and 6 GHz bands
- Choose non-overlapping 2.4 GHz channels and explain co-channel interference
- Read signal strength in dBm
- Choose appropriate Wi-Fi security settings
Course outline
- 1.Wi-Fi fundamentals for support techniciansVideo · 2 min
- 2.Bands, channels and signalLesson · 18 min
- 3.Planning channels and powerLesson · 16 min
- 4.Troubleshooting Wi-Fi complaintsLesson · 15 min
- 5.Wi-Fi fundamentals: knowledge checkKnowledge check · 17 questions
- 6.Wi-Fi fundamentals: practical exerciseKnowledge check · 1 question
- 7.Final exam7 questions · passing it completes the course, so people who already know the material can test out
Sources it draws on
The lessons and questions are written from these references, so learners can go back to the original.
- IEEE 802.11 (Wi-Fi) standards family
- Wi-Fi Alliance: WPA3 overview
- Common wireless design practice: channel planning and signal targets
See it with your own jobs and topics
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