Operating System (OS)
Capacity planning

is not needed in small installations
None of these
does not depend on the monitoring tools available
is independent of the operating system
requires detailed system performance information

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Operating System (OS)
The Memory Address Register

None of these
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".
contains the address of the memory location that is to be read from or stored into.
is a group of electrical circuits (hardware), that performs the intent of instructions fetched from memory.
is a hardware memory device which denotes the location of the current instruction being executed.

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