operating system over view, Operating System

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explain function of computer operating system?

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what is the use of valid invalid bits in paging

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What are the different types of semaphore? Principally the semaphore is able to be classified into two on the basis of their values a)      Counting semaphore: In counting s

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UNIX systems utilized to use disk-layout optimizations based on the rotation position of disk data however modern implementations including Linux simply optimize for sequential dat

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Explain Deadlock Prevention-Resource allocation graph allocation Resource allocation graph algorithm :  Using this algorithm we are able to actually know if there exists in th

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Briefly discuss on page replacement? Page replacement approach is fixed as follows. If no frame is free, we search one that is not presently being used and free it. We can fre

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Consider a demand-paging system with the following time-measured utilizations: CPU utilization: 10%, Paging disk: 98%, Other I/O devices: 5%. What does this imply? How to improv

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