Operating System (OS)
The FIFO algorithm

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

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Operating System (OS)
File record length

should always be fixed
Should always be variable
depends upon the size of the file
should be chosen to match the data characteristics
None of these

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Operating System (OS)
The term "operating system" means

the way a floppy disk drive operates
a set of programs which controls computer working
None of these
the way a computer operator works
conversion of high level language into machine code

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