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Please give good answers for both for a thumbs up :-) 6. A computer has 4 GB of RAM of which the operating system occupies

Please give good answers for both for a thumbs up :-)

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6. A computer has 4 GB of RAM of which the operating system occupies 512 MB. The processes are all 256 MB (for simplicity) and have the same characteristics. If the goal is 99% CPU utilization, what is the maximum I/O wait that can be tolerated? 7. Multiple jobs can run in parallel and finish faster than if they had run sequentially Suppose that two jobs, each needing 20 minutes of CPU time, start simultaneously How long will the last one take to complete if they run sequentially? How long if they run in parallel? Assume 50% I/O wait

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