Operating System (OS)
Round-robin scheduling

None of these
is quite complex to implement
allows interactive tasks quicker access to the processor
allows processor-bound tasks more time in the processor
gives each task the same chance at the processor

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Operating System (OS)
The Memory Address Register

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

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