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SSC Sample Paper NCERT - Sample Paper-7

  • question_answer
    With reference to 'LiFi', recently in the news, which of the following statement(s) is/are correct?          (2017)
    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: C

    Solution :

    [c] LiFi - light fidelity is a bidirectional, light speed and fully networked wireless. It is a form of visible light communication used visible light, infrared and near ultraviolet communication. It is faster than wi-fi.          


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