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With reference to visible light communication (VLC) technology, which of the following statements are correct?

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.


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