the channel in the data communication model can be?
option
a.postal mail serv.
b telephon lines
c.radio signals
d. all the above
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needs examples for black box testing and white box testing
Q1.Write a C program which asks the user for a number between 1 to 9 and shows the number. If the user inputs a number out of the specified range, the program should show an error and prompt the user for a valid input.
THE CHANNEL IN DATA COMMUNICATION CAN BE?
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