Explain the difference between passing data by value and passing data by reference.
What will be an ideal response?
When you pass a variable by value, the computer passes a copy of the variable's contents to the receiving procedure. The procedure cannot change the value stored inside the variable because it does not have access to the variable's memory location. When you pass a value by reference, you are passing the variable's memory location in the computer's internal memory. This method gives the receiving procedure access to the variable being passed. You pass a variable by reference when you want the receiving procedure to change the contents of the variable.
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Fill in the blank(s) with the appropriate word(s).
Draw a picture of properly aligned transmit and receive signals of a computer’s data link that is running Ethernet data rates.
What will be an ideal response?
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a. header b. trailer c. extension d. contents
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