A 'dead' 5 GHz cell appears in a municipal annex. Comparing spectrum noise-floor readings across bands, which conclusion process is most sound?
Select an answer to reveal the explanation.
Short Explanation
Dead 5 GHz could be a jammed channel or a radio that gave up — spectrum and noise-floor clues tell those stories apart. If the band is quiet but the AP isn't painting Wi-Fi energy, suspect the radio; if the band is trash, hunt the interferer. Rebooting the core switch isn't RF triage.
Full Explanation
Comparing noise floor and spectral activity across bands helps isolate whether the 5 GHz problem is external interference or a faulty AP radio. Absence of expected Wi-Fi signatures with a normal noise floor often points to radio or configuration failure, while elevated non-Wi-Fi energy suggests an interferer. Assuming client error, jumping to PoE replacement, or claiming spectrum is useless skips that isolation step.