Operating System (OS)
Part of a program where the shared memory is accessed and which should be executed invisibly is called

semaphores
directory
critical section
None of these
mutual exclusion

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Operating System (OS)
The Storage-to-Storage instructions

which perform indicated operations on two fast registers of the machine and have the result in one of the registers
have both their operands in the main store.
All of these
which perform an operation on a register operand and an operand which is located in the main store, generally leaving the result in the register, expect in the case of store operation when it is also
None of these

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

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Operating System (OS)
All of the following are TRUE regarding virtual memory EXCEPT

Virtual memory is the physical space o the hard drive
This temporary storage is called the swap file or page file
The setting for the amount of hard disk drive space to allocate virtual memory can be manually change
Any amount of RAM can be allocated to virtual memory

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