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Q. When virtual memory is executed in a computing system there are convinced costs associated with the technique and certain benefits. List the costs as well as the benefits. Is it probable for the costs to surpass the benefits? If it is what measures can be taken to ensure that this doesn't happen?
Answer: The costs are additional hardware in addition to slower access time. The benefits are good use of memory and larger logical address space than physical address space.
Q. Polling for an I/O completion is able to waste a large number of CPU cycles if the processor iterates a busy-waiting loop several times before the I/O completes. However if the
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