Operating System (OS)
Backups should be done

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

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

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

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