Operating System (OS)
Backups should be done

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

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

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