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Q. Some untimely computers protected the operating system by placing it in a memory partition that couldn't be modified by either the user job or the operating system itself. Explain two difficulties that you think could arise with such a scheme.
Answer: The data necessary by the operating system (access controls, passwords, accounting information, and so on) would have to be stored in or passed through unprotected memory and thus be accessible to unauthorized users.
advantage and dis advantage of threads
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What is the purpose of system calls? System calls permit user-level processes to request services of the operating system.
with aid of diagram describe 2 types of fixed partition allocation used in operating system
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The hardware to support demand paging is as follows Page table: This table has the skill to mark an entry invalid though a valid-invalid bit or particular value of protectio
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Discuss the risks of having a single root user
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