Operating System (OS)
The FIFO algorithm

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

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Operating System (OS)
You should choose sleep option when

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

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