Operating System (OS)
The Memory Address Register

is a group of electrical circuits (hardware), that performs the intent of instructions fetched from memory.
contains a copy of the designated memory location specified by the MAR after a "read" or the new contents of the memory prior to a "write".
is a hardware memory device which denotes the location of the current instruction being executed.
None of these
contains the address of the memory location that is to be read from or stored into.

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Operating System (OS)
Which, of the following, is true for testing and debugging?

Testing and debugging indicate the same thing
None of these
Testing detects the syntax errors in the program while debugging corrects those errors in the program
Testing checks for logical errors in the programs, while debugging is a process of correcting those errors in the program
All of these

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