Bluetooth operations use-
A
Magnetic technology
B
Optical technology
C
Laser technology
D
Radio technology
Correct Answer: Radio technology
Bluetooth is a radio technology. Bluetooth operates at frequencies between 2.402 and 2.480 GHz, or 2.400 and 2.4835 GHz including guard bands 2 MHz wide at the bottom end and 3.5 MHz wide at the top. This is in the globally unlicensed (but not unregulated) industrial, scientific and medical (ISM) 2.4 GHz short - range radio frequency band.