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)
A program

None of these
is a sequence of instructions
is a device that performs a sequence of operations specified by instructions in memory.
is the device where information is stored
is typically characterized by interactive processing and time of the CPU

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Operating System (OS)
Operating system

enables the programmer to draw a flowchart
All of these
links a program with the subroutines it references
provides a layered, user-friendly interface
None of these

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