Suggested Answer:D🗳️
Over the last 10 years 802.11 technology has made remarkable strides -- getting faster, stronger and more scalable. But one problem still haunts Wi-Fi: reliability. Nothing is more frustrating for network managers than users complaining about flaky Wi-Fi performance, spotty coverage and dropped connections. Dealing with a Wi-Fi environment that you can't see and that is constantly changing is the problem. And radio frequency interference is the culprit.
I would say cordless phone. In the early days of 802.11b/g it was very common for household devices (e.g. cordless phones and microwaves) to interfere with wireless connections since they were all contending for space in the 2.4Ghz band. The workaround was to install an 802.11a AP & NIC(s) so you could connect using the 5Ghz band, but the range was more limited.
I got this exact question on my exam yesterday but my options were cordless phone, cellular phone, computer monitor, and fluorescent lights. So which would be the best answer from there?
I would have guessed cell phones for your answer. if they did not give EMI. Cell phone normally operate at 2.1 GHz UHF Frequency. BUT cordless can operate at the same Freq as well. Cordless phones have a wide band of frequency ranges though. so it is a little bit of a trick question.
Cordless Phones and cellular phones operate through Radio Frequencies which are part of the electromagnetic spectrum (EMS), so electromagnetic interference or EMI is correct. 802.11g operates on the 2.4 GHz band of the EMS, which is the same band you will find microwaves and Bluetooth.
this should be cordless phones. EMI affects wired connections
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