Question

Q47. With reference to Li-Fi technology, consider the following statements:

1. It is a bidirectional technology that uses LEDs to transmit data using wires.

2. Its speed is faster than the speed of Wi-Fi.

Select the correct answer using the codes given.

• A. (a) Only 1
• B. (b) Only 2
• C. (c) Both 1 and 2
• D. (d) None of the above

Answer 1

The correct option is B

(b) Only 2

differences between Li-Fi and Wi-Fi :

• Li-Fi can be considered as a light-based Wi-Fi. It uses light instead of radio waves to transmit information.
• Li-Fi is transmission of data using illumination i.e. sending data through an LED lamp that varies intensity of light faster than what human eye can perceive.
• Instead of Wi-Fi modems, Li-Fi would use transceiver-fitted LED lamps that can light a room as well as transmit and receive information.
• Wi Fi is great for general wireless coverage within building and Li-Fi is ideal for high density wireless date coverage in confined area and for relieving radio interference issues.