Operating System (OS)
The virtual memory is

An extremely large secondary memory
An illusion of extremely large main memory
An extremely large main memory
A type of memory used in super computer

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Operating System (OS)
Backups should be done

as several incrementals, followed by an image copy
None of these
daily for most installations
weekly for most installations
as several image copies, followed by an incremental

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Operating System (OS)
The function(s) of the Storage Assignment is (are)

All of these
to assign storage to all variables referenced in the source program.
to assign storage to all temporary locations that are necessary for intermediate results.
None of these
to assign storage to literals, and to ensure that the storage is allocate and appropriate locations are initialized.

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