With reference to visible light communication (VLC) technology, which of the following statements are correct?
1.VLC uses electromagnetic spectrum wavelengths 375 to 780nm
2.VLC is known as long-range optical wireless communication
3.VLC can transmit large amounts of data faster than Bluetooth
4.VLC has no electromagnetic interference
Select the correct answer using the code given below(2020)
a) 1, 2 and 3 only
b) 1, 2 and 4 only
c) 1, 3 and 4 only
d) 2, 3 and 4 only
ANswer: C
VLC is known as short-range optical wireless communication.
Visible light communication (VLC) is a wireless method that enables high-speed transmission of data with visible light. This data is transmitted by modulating the intensity of light given off by a light source. The signal is received by a photodiode device that transforms the data into forms that are readable and readily-consumed by end users.
