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

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

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Operating System (OS)
Data encryption

None of these
cannot be used by private installations
is mostly used by financial networks
is mostly used by public networks
is not necessary, since data cannot be intercepted

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Operating System (OS)
Semaphores

synchronize critical resources to prevent deadlock
are used to do I/O
are used for memory management
synchronize critical resources to prevent contention
None of these

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