Operating System (OS)
Virtual Memory

is a method of memory allocation by which the program is subdivided into equal portions, or pages and core is subdivided into equal portions or blocks.
is a method of allocating processor time.
None of these
consists of those addresses that may be generated by a processor during execution of a computation.
allows multiple programs to reside in separate areas of core at the time.

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Operating System (OS)
The CPU, after receiving an interrupt from an I/O device

halts for a predetermined time
branches off to the interrupt service routine immediately
None of these
hands over control of address bus and data bus to the interrupting device
branches off to the interrupt service routine after completion of the current instruction

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