Operating System (OS)
A critical region is

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

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Operating System (OS)
What hole will allocates in "Worst-Fit" algorithm of memory management?

It allocates the exact same size memory hole
It allocates the smallest hole from the available memory holes
It allocates the largest hole from the available memory holes
It allocates the smaller hole than required memory hole

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Operating System (OS)
A page fault

is an error is a specific page
None of these
is a reference to a page belonging to another program
is an access to a page not currently in memory
occurs when a program accesses a page of memory

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Operating System (OS)
Indicate which, of the following, in not true about an interpreter

Interpreter analyses each source statement every time it is to be executed
All of these
Interpreter generates an object program from the source program
None of these
Interpreter is a kind of translator

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