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Define FIFO Page Replacement Algorithm
This policy simply eliminates pages in the order they arrived in the main memory. By using this policy we simply remove a page based upon the time of its arrival in the memory. For instance if we comprise the reference string that is: 1, 2, 3, 4, 1, 2, 5, 1, 2, 3, 4, 5 and 3 frames (3 pages can be in memory at a time per process) after that we have 9 page faults as shown
Buddy system of memory allocation Free memory is used to maintain in linked lists, each of similar sized blocks. Every block is of size 2^k. When some memory is needed by a th
Explain in detail about ipc in linux
what are the threds in operating system?
Process States A total of nine states are acknowledged by the UNIX system. They are like as follow: User running Executing
Q. What is Multiprogramming? Multiprogramming When two or more programs are in memory at the same instance, sharing the processor is referred to multiprogramming opera
Define Enforcing Modularity for C Additionally, in C it is sometimes necessary to create modularity of design. C++ is very natural model for component based application design
what are reasons for cooperating processes
Q. Why do several systems store the operating system in firm ware and others on disk? Answer: For certain devices such like handheld PDAs and cellular telephones a disk with
What are the allocation methods of a disk space? Methods of allocating disk space which are widely in use are a. Contiguous allocation b. Linked allocation c. Indexed
Explain Process scheduling Process scheduling consists of the subsequent sub-functions: 1. Scheduling : Selects the process to be implement next on the CPU 2. D
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