Science and Technology
2020
Communication Technology
UPSC Practice Question
With reference to Visible Light Communication (VLC) technology, which of the following statements are correct?
- VLC uses electromagnetic spectrum wavelengths 375 to 780 nm.
- VLC is known as long-range optical wireless communication.
- VLC can transmit large amounts of data faster than Bluetooth.
- VLC has no electromagnetic interference. Select the correct answer using the code given below:
A.1, 2 and 3 only
D.2, 3 and 4 only
B.1, 2 and 4 only
C.1, 3 and 4 only