Operating System (OS)
A critical region is

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

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Operating System (OS)
Seeks analysis

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

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Operating System (OS)
Paging

consists of those addresses that may be generated by a processor during execution of a computation.
is a method of allocating processor time.
allows multiple programs to reside in separate areas of core at the time.
is a method of memory allocation by which the program is subdivided into equal portions, or pages and core is subdivided into equal portions or blocks.
None of these

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