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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
How does user specify block to be fetched in direct access? By specifying the relative block number, relative to first block in file, which is block 0.
Do you have writers that can use the software AIMMS version 3.9?
Q. Consider a system that holds 5000 users. Presume that you want to allow 4990 of these users to be able to access one file. a. How would you denote this protection scheme in
What is critical section? Every process has a segment code called the critical section, in which the process may be updating tables, changing variables, writing file and etc. W
Explain what ISAM is. Indexed sequential access method. The file is stored in sorted order. ISAM has a master index file, indicating in what part of another index file the key
What are the objectives and functions of operating system? Functions of operating systems 1. It allocates the resources and acts as a supervisor. 2. It hides th
origin of opreation reasrech
Parent process P creates three child processes, C1, C2, and C3. Each child process executes a memory and CPU intensive application of your choice. Your choice should be such that
What is File Allocation? The structure that offers the FAT file system its name is the file allocation table . In order to know what this important table does, you should fir
Describe paging technique used in UNIX systems. When a process begin in UNIX, not every its memory pages are read in from the disk at once. In its place, the kernel loads into
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