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 FIFO algorithm

executes first the job that first entered the queue
executes first the job that last entered the queue
executes first the job with the least processor needs
execute first the job that has been in the queue the longest
None of these

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Operating System (OS)
System generation:

is always quite simple
varies in difficulty between systems
is always very difficult
None of these
requires extensive tools to be understandable

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