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The information exchanged between two computers is physically carried by means of _________ with the help of certain coding method

Question: The information exchanged between two computers is physically carried by means of   _________ with the help of certain coding method

 

Options are:
a.    Electronics signal
b.    Electrical signal
c.    Physical signal
d.    Physical circuits

Correct answer is:

 

b.    Electrical signal

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