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The optimal replacement policy, called OPT, is to evict the page which will be accessed farthest into the future. Since we can't predict the future precisely, we can't implement OPT in any real system. We can, however, run OPT on a saved trace of memory accesses, to measure how our real algorithm compares with OPT for a given trace.
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Explain the Advantage of Assembly Language The advantages of assembly language program is: a) Reduced errors b) Faster translation times c) Changes could be ma
mention the three problems that mat be caused by wrong initialization and placement of wait() and signal()operations in the use of semaphore
Resolution of externally defined symbols is carried out by Resolution of externally defined symbols is carried out by Linker
File allocation using I nodes. This method is used to decrease the size of the table in the above method. Every file will have an I-node list. Allow a file have 15 pointers a
The term thread-safe in computer programming describes that routine or portion of the program that may be called from multiple programming threads without uncalled for interactions
Question: a) The following questions pertain to User and Group accounts in Windows XP: i) Give four differences between a Power User and a Guest User account. ii) Explain h
What is a reference string? An algorithm is evaluated by running it on a particular string of memory references and computing the number of page faults. The string of memory re
Question: a) Define the term ‘Operating System' and identify two goals of an operating system. b) What do you understand by Symmetric multiprocessing (SMP) and Asymmetr
Explain about paging? Answer: Paging is a memory-management scheme that permits the physical-address space of process to be noncontiguous. Paging avoids the considerable proble
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