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LiFi Technology
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Question 1
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With reference to the LiFi technology, consider the following statements:
1. It is a wireless optical networking technology that uses light emitting diodes.
2. It uses light as medium to deliver high-speed communication in a manner similar to Wi-Fi.
3. It provides better bandwidth, efficiency, connectivity and security than Wi-Fi.
Which of the statement(s) given above is/are correct?
(a) 1 only
(b) 2 and 3 only
(c) 1, 2 and 3
(d) 2 only
Explanation Statement 1 is correct: LiFi technology is a wireless optical networking technology that uses light-emitting diodes (LEDs) for data transmission.
Statement 2 is correct: It uses light as a medium to deliver high-speed communication in a manner similar to Wi-Fi.
Statement 3 is correct: Wi-Fi is of major use for general wireless coverage within buildings, whereas Li-Fi is ideal for high density wireless data coverage in confined areas and especially useful for applications in areas where radio interference issues are of concern, so the two technologies can be considered complementary. Li-Fi provides better bandwidth, efficiency, connectivity and security than Wi-Fi and has already achieved high speeds larger than 1 Gbps under the laboratory conditions. By leveraging the low-cost nature of LEDs and lighting units, there are lots of opportunities to exploit this medium. Li-Fi is the transfer of data through light by taking fiber out of fiber optics and sending data through LED light bulbs.
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