Operating System (OS)
What is the name of the technique in which the operating system of a computer executes several programs concurrently by switching back and forth between them?

Multitasking
None of these
Paging
Partitioning
Windowing

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Operating System (OS)
Memory management is :

None of these
not used in modern operating system
not used on multiprogramming systems
critical for even the simplest operating systems
replaced with virtual memory on current systems

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