Operating System (OS)
A linker

creates a load module
None of these
is not necessary with variable partitions
must be run after the loader
is not needed with a good compiler

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Operating System (OS)
A critical region is

a program segment where shared resources are accessed
none is the above
a program segment that has not been proved bug-free
a program segment that often causes unexpected system crashes
one which is enclosed by a pair of P and V operations on semaphores

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