Operating System (OS)
The file structure that redefines its first record at a base of zero uses the term:

dynamic reallocation
hashing
relative organization
None of these
key fielding

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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
none is the above
a program segment that has not been proved bug-free
a program segment that often causes unexpected system crashes
a program segment where shared resources are accessed

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Operating System (OS)
Thrashing can be avoided if

None of these
All of these
the speed of CPU is increased
the speed of I/O processor is increased
the pages, belonging to the working set of the programs, are in main memory

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