What are electromagnetic interference (EMI) and radio frequency interference (RFI)?
What will be an ideal response?
Electromagnetic interference (EMI) and radio frequency interference (RFI) are two sources of Physical layer interference.EMI is caused by magnetic force fields that are generated by electrical devices such as fans, elevator motors, portable heaters, and air-conditioning units. RFI is caused by electrical devices that emit radio waves at the same frequency used by network signal transmissions. These transmissions include cable TV components, radio and television stations, nearby amateur radio operators, ballast devices in fluorescent lights, inexpensively built computer or TV equipment, and CB radios.
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