Operating System (OS)
A critical region is

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

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Operating System (OS)
A linker

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

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Operating System (OS)
Process is

None of these
program in High level language kept on disk
a job in secondary memory
a program in execution
contents of main memory

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Operating System (OS)
The main function of the dispatcher (the portion of the process scheduler) is

bring processes from the disk to the main memory
None of these
swapping a process to the disk
assigning ready process to the CPU
suspending some of the processes when the CPU load is high

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