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Basic concepts
When a process is to be changed in, the pager guesses which pages will be used before the process is changed out again. Instead of swapping in a entire process, the pager brings only those essential pages into memory. The valid-invalid bit scheme can be used to distinguish among pages that are in memory and those pages that are on the disk. Access to a page marked unacceptable causes a page-default trap. This trap is the result of the operating system's failure to bring the needed page into memory.
Q. Can a system detect that some of its processes are starving? If you answer "yes," explain how it can. If you answer "no," explain how the system can deal with the starvation pro
What is spooling? Spooling overlaps the I/O of single job with the computation of other jobs.
What is area moment
Inverted page table In page table the page table has one entry for every page that the process is using. The operating system must translate this reference into a physical memo
Advantages and disadvantages of time-sharing operating system
Suppose we have 3 processes running at the same time as shown in the following table. Each resource only has one instance. Show a possible scenario of resource allocation that r
importance of Operating system in modern computers. Also explain various functions & types of operating systems
Define what a macro definition consists of
Process termination A process terminates when it finishes implementing its final statement and asks the operating system to delete it by using the exit system call. At that tim
what are the threds in operating system?
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