Operating System (OS)
The working set theory of programming behaviour of processes running within an operating system involves

disk scheduling mechanisms
None of these
the collection of pages that a process accesses
assigning the CPU to processes
coalescing holes in memory

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Operating System (OS)
System generation:

requires extensive tools to be understandable
varies in difficulty between systems
None of these
is always quite simple
is always very difficult

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Operating System (OS)
File record length

should be chosen to match the data characteristics
depends upon the size of the file
Should always be variable
should always be fixed
None of these

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