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Q. Explain about Error detection method?
Error detection: error can occur in CPU, in I/O devices or in memory hardware. Operating system constantly needs to be aware of possible errors. It must take the appropriate action to guarantee correct and consistent computing.
1. Resource Allocation
2. Accounting
3. Protection
i need the job to be done within 3days
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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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