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Banking Computers Science Sample Paper Computer - Sample Paper - 18

  • question_answer
    The physical layer is concerned with transmission of_____ over the physical medium.

    A) Programs                      

    B) Dialogs

    C) Protocols          

    D)        Bits

    E) None of these

    Correct Answer: D

    Solution :

    The physical layer, lowest layer, in the OSI model is concerned with the transmission and reception of the unstructured raw bit stream (rather than logical data packets) over a physical medium. The hit stream may be grouped in to  code words or symbols and converted to a physical signal that is transmitted over a hardware transmission medium.


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