Operating System (OS)
Which of the following is not true about documentation?

Documentation increases the maintenance time and cost
None of these
Documentation, of a system, should be as clear and direct as possible
Documentation gives better understanding of the problem
All of these

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Operating System (OS)
A critical region is

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

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