Operating System (OS)
Backups should be done

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

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Operating System (OS)
You should choose sleep option when

You are leaving for a very short time and want to resume you work shortly
The computer is tired after working for the whole day
You finish working and going to bed
When computer gets hanged frequently. Let it sleep for some time

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