Operating System (OS)
Feed back queue

are very easy to implement
are used to favor real-time tasks
None of these
require manual intervention to implement properly
dispatch tasks according to execution characteristics

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Operating System (OS)
Paging

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.
is a method of allocating processor time.
consists of those addresses that may be generated by a processor during execution of a computation.
allows multiple programs to reside in separate areas of core at the time.
None of these

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Operating System (OS)
A critical region is

one which is enclosed by a pair of P and V operations on semaphores
a program segment where shared resources are accessed
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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