During lunch time in the break room of a company, Wi-Fi connectivity on the 2.4 GHz band is intermittent. Every other time of the day, it works fine. What's the likely cause of this issue?
A.
Employees are using their cell data instead of using the Wi-Fi
B.
The AP in the cafeteria keeps rebooting due to lack of PoE budget on the switch
C.
Microwaves in the cafeteria are interfering with the Wi-Fi on the 2.4 GHz band
D.
Toasters and ovens are heating up the air, raising the noise floor with the Wi-Fi on the 2.4 GHz band
Microwave ovens operate at a frequency of approximately 2.45 GHz, which overlaps with the Wi-Fi 2.4 GHz band. During lunchtime, when microwaves are heavily used, they emit electromagnetic interference that disrupts Wi-Fi signals in the same frequency range, causing packet loss, retries, and intermittent connectivity.
“Microwave ovens can cause significant interference in the 2.4 GHz band, particularly when used in close proximity to client devices and APs.”
— CWDP-305 Study Guide, Chapter: Post-Design ValidationandTroubleshooting
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