Q69. With reference to Visible Light Communication (VLC) technology, which of the following statements are correct? 1. VLC uses electromagnetic spectrum wavelengths of 375 to 780 nm 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:

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 transmissio

With reference to ‘Near Field Communication (NFC) Technology’, which of the following statements is/are correct? 1. It is a contactless communication technology

Consider the following: 1. Bluetooth device 2. Cordless phone 3. Microwave oven 4. Wi-Fi device Which of the above can operate between 2.4 and 2.5 GHz range of

What is the difference between Bluetooth and Wi-Fi devices?

With reference to street - lighting, how do sodium lamps differ from LED lamps? 1. Sodium lamps produce light in 360 degrees but it is not so in the case of LED

Organic Light Emitting Diodes (OLEDs) are used to create digital displays in many devices. What are the advantages of OLED displays over Liquid Crystal displays

What is the difference between a CFL and an LED lamp? 1. To produce light, a CFL uses mercury vapour and phosphor while an LED lamp uses semiconductor material.

Consider the following statements: 1. Light of longer wavelengths is scattered much more than the light of shorter wavelength. 2. The speed of visible light in

Consider the following communication technologies: 1. Closed-circuit Television 2. Radio Frequency Identification 3. Wireless Local Area Network Which of the ab

With reference to communications technologies, what is/are the difference/differences between LTE (Long-Term Evolution) and VoLTE (Voice over Long-Term Evolutio

Graphene has been frequently in the news recently. What is its importance? 1. It is a two-dimensional material and has good electrical conductivity. 2. It is on

In the context of digital technologies for entertainment, consider the following statements: 1. In Augmented Reality (AR), a simulated environment is created an

A new optical disc format known as the Blu-ray Disc (BD) is becoming popular. In what way is it different from the traditional DVD? 1. DVD supports Standard Def

With the present state of development, Artificial Intelligence can effectively do which of the following? 1. Bring down electricity consumption in ind

In India, under cyber insurance for individuals, which of the following benefits are generally covered, in addition to payment for the loss of funds a

With reference to “Blockchain Technology” consider the following statements: 1. It is a public ledger that everyone can inspect but which no single us

Which of the following statements are correct regarding the general difference between plant and animal cells? 1. Plant cells have cellulose cell wall

In the context of recent advances in human reproductive technology. “Pronuclear Transfer” is used for

With reference to solar water pumps, consider the following statements: 1. Solar power can be used for running surface pumps and not for submersible p

With reference to the current trends in the cultivation of sugarcane in India, consider the following statements: 1. A substantial saving in seed mate

Consider the following statements: A digital signature is __________ 1. an electronic record that identifies the certifying authority issuing it 2. us