7th Class Computers Science Internet Question Bank Internet and Viruses

  • question_answer
     Two transmission channels are shown here. Select the statement which is CORRECT about them. 
     

    A)
    Cable-1 uses the concept of light for data transmission.
    Cable-2 uses the concept of radio waves for data transmission.

    B)
    Cable-1 is suitable for transmitting signal of low power over a small distance.
    Cable-2 is used by older telephone networks.
     

    C)
    Cable-1 uses electromagnetic radiation.
    Cable-2 is basically used for short distance communication such as television and remote control.

    D)
    Cable-1 allows for high speed data transmission over a long distance.
    Cable-2 is made up of optical fibres.

    Correct Answer: B

    Solution :

    Cable-1 is coaxial cable which is used for transmission of data in shorter distances and Cable-2 is of twisted pair cable which was traditionally used in telephone networks.


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