Operating System (OS)
Thrashing

can always be avoided by swapping
is a natural consequence of virtual memory systems
None of these
can be caused by poor paging algorithms
always occurs on large computers

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Operating System (OS)
Addressing structure

All of these
performs indicated operations on two fast registers of the machine and leave the result in one of the registers.
None of these
are variations in the use of fundamental addressing structures, or some associated actions which are related to addressing.
defines the fundamental method of determining effective operand addresses

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Operating System (OS)
A page fault

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

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