Operating System (OS)
Block caches or buffer caches are used

to handle interrupts
to speed up main memory read operation
None of these
to improve disk performance
to increase the capacity of the main memory

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Operating System (OS)
Thrashing

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

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Operating System (OS)
What is the meaning of "Hibernate" in Windows XP/Windows 7?

Shutdown the Computer without closing the running applications
Shutdown the Computer terminating all the running applications
Restart the Computer in safe mode
Restart the Computer in hibernate mode

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