Wireless Site Surveys, Heatmaps, and Interference Explained - Network+ N10-009
Watch on YouTube Wireless site surveys, heatmaps, and interference are core Network+ N10-009 troubleshooting skills, and this video walks through all three with the tools real wireless engineers use. Learn the difference between passive, active, and predictive surveys, how to read RSSI and SNR on a heatmap, and how to spot coverage holes and overlap rings before users complain. Covers co-channel vs adjacent-channel interference, the 3 non-overlapping channels on 2.4 GHz, DFS radar protection on 5 GHz, channel widths from 20 MHz to 160 MHz, AP placement, antenna orientation, association failures, sticky clients, and the survey toolkit: Ekahau, NetSpot, and inSSIDer. Watch the next video in the playlist for Layer 1 cabling, power, and environmental troubleshooting.
▶ Watch next: Layer 1 Troubleshooting - Cabling, Power, and Environmental Faults - Network+ N10-009 https://www.youtube.com/watch?v=QV_4KKsrvPU
Chapters
- 0:00 When the Wi-Fi Looks Fine But Users Do Not Agree
- 2:21 Three Surveys Every Technician Should Know
- 4:39 Reading a Heatmap Without Guessing
- 7:02 Interference, Co-Channel, and the Noise Floor
- 9:09 Channel Width, DFS, and AP Placement
- 11:27 Roaming, Association Failures, and the Survey Toolkit
- 14:16 Quiz Time
Wireless site surveys, heatmaps, and interference are core Network+ N10-009 troubleshooting skills, and this video walks through all three with the tools real wireless engineers use. Learn the difference between passive, active, and...
Key Topics
- When the Wi-Fi Looks Fine But Users Do Not Agree
- Three Surveys Every Technician Should Know
- Reading a Heatmap Without Guessing
- Interference, Co-Channel, and the Noise Floor
- Channel Width, DFS, and AP Placement
- Roaming, Association Failures, and the Survey Toolkit