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
Any amount of RAM can be allocated to virtual memory
The setting for the amount of hard disk drive space to allocate virtual memory can be manually change

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Operating System (OS)
Multiprogramming systems:

None of these
are easier to develop than single programming system
are used only on large mainframe computers
execute each job faster
execute more jobs in the same time period

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Operating System (OS)
All of the following are task performed by the operating system except

Provides an interface for user to interact with computer
Managing hardware on the computer
Controlling the access that application program has to the CPU
Performing housekeeping task like file compression and disk defragmentation

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Operating System (OS)
What is dispatch latency ?

The time taken by the dispatcher to stop one process and start another
None of the listed here
The time taken by the processor to write a file into disk
The whole time taken by all processor

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