As part of a wireless site survey in a hospital, an engineer needs to identify potential Layer 1 interferers. In which two areas is the engineer most likely to find sources of 2.4 GHz and 5 GHz RF noise? (Choose two.)
This answer is right, even though I wasn't sure at first. MRI scans emit at a frequency of 1MHz-300MHz, which is below the frequency of Wi-Fi (2.4GHz and 5GHz). Gamma rays (Exahertz) and X-rays (Petahertz) are happening at frequencies much higher than RF as well. Kitchens can be source of 2.4GHz interference with microwave ovens. I have no clue what can cause RF noise in patient rooms, but by elimination, it works.
the question asks for "potential Layer 1 interferers". patients can have bluetooth devices such as headphones or just mobile phones, tablets, laptops with bluetooth switched on. :)
Correct
People have mobile devices in patient rooms such as tablets and cellphones which adds to the rf noise on 2.4Ghz and 5Ghz.
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