Operating System (OS)
In which of the storage placement strategies a program is placed in the largest available hole in the main memory?

first fit
best fit
buddy
worst fit
None of these

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Operating System (OS)
Under virtual storage,

a single program is processed by two or more CPUs
None of these
two or more programs are stored concurrently in primary storage
interprogram interference may occur
only the active pages of a program are stored in primary storage

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Operating System (OS)
Thrashing

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

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