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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. What is the purpose of system calls? Answer: System calls permit user-level processes to request services of the operating system.
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Scalability Scalability is the ability of the system to adapt to increased service load. A scalable system will respond more gracefully to increased load than a non scalable on
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