GS PrelimsScience and TechnologyInformation and Communication Technology2016

With reference to 'LiFi', recently in the news, which of the following statements is/are correct? 1. It uses light as the medium for high- speed data transmission. 2. It is a wireless technology and is several times faster than 'WiFi'. Select the correct answer using the code given below.

A

1 only.

B

2 only

C

Both 1 and 2

D

Neither 1 nor 2

Correct Answer: Option C

Explanation

1. Statement 1 is correct. LiFi, short for Light Fidelity, is a communication technology that uses the visible light spectrum (as well as infrared and ultraviolet) as a medium for high-speed data transmission. It is a form of Visible Light Communication (VLC). 2. Statement 2 is correct. LiFi is indeed a wireless technology. Because the light spectrum offers significantly more bandwidth than the radio frequency spectrum used by WiFi, LiFi has the potential to achieve data transmission speeds that are several times faster than conventional WiFi.

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