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

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

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Operating System (OS)
Seeks analysis

None of these
is only shown on real-time displays
is used for analyzing device busy problems
is used for analyzing control-unit busy problems
is used for analyzing paging problems

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Operating System (OS)
System maintenance:

None of these
is usually not necessary
always requires several programs
is necessary on all systems, regardless of how good
is not required if the system is well written

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