Operating System (OS)
....... is the layer of a computer system between the hardware and the user program

System environment
None of these
Operating environment
Operating system

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Operating System (OS)
Virtual Memory

is a method of allocating processor time.
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.
consists of those addresses that may be generated by a processor during execution of a computation.
None of these
allows multiple programs to reside in separate areas of core at the time.

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Operating System (OS)
Link encryption

is more secure than end-to-end encryption
is less secure than end-to-end encryption
can not be used in a public network
is used only to debug
None of these

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