what operating system do, Operating System

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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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Q. Why is rotational latency typically not considered in disk scheduling? How would you alter SSTF, SCAN and C-SCAN to comprise latency optimization? Answer: Most disks don't

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Write a short note about the different STATES of a process. As a process implement it changes state. The state of a process is described in part by the current activity of that

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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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What is preallocation? Why do it? Allocating space for a file before making the file to allow for expansion. This reserves space for a certain file so that other files can't gr

What is a message passing system, Question 1 What is a message passing sys...

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Several cpu-scheduling algorithms, Q. Several CPU-scheduling algorithms are...

Q. Several CPU-scheduling algorithms are parameterized for instance the RR algorithm requires a parameter to indicate the time slice. Multilevel response queues require parameters

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What are the hardware and software requirements for virtual memory? The hardware required for virtual memory is a secondary memory and page table. The page table should have th

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