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Q. How Program execute in operating system?
Program execution: Operating system loads a program in memory and executes the program. The program should be able to end its execution either abnormally or normally.
I/O Operation: I/O refers to any file or any specific I/O device. Program may need any I/O device while running. So operating system should provide required I/O.
File system manipulation: Program requires towrite a file or read a file. The operating system gives the permission to program for operation on file.
Explain system-wide open-file and per-process open-file The system-wide open-file table have a copy of the FCB of each open file, as well as other information. The per-pr
From hardware perspective, every information system can be divided into three task areas Presentation, Application Logic and Data Storage. The R/3 Basis software is extremely s
Forking is an important phase of Unix, critical to the support of its design strategies, which encourages the implementation of filters. In Unix, a filter is a process that reads i
Page Fault Handling conditions like, where the copy on write bit of a page is set and that page is send by more than one process, the Kernel assign new page and copies the conten
Explain the basic concepts of segmentation. Segmentation definition User view of program Hardware used with diagram-segment table, base, limit & offset Protection and
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.
Write a short note on Memory management. Memory management includes reallocating and allocating the memory space. The kinds of allocation of memory FIXED PARTITIONING
what is meant by lazzy swapper
A- Consider a computer system that provides a virtual memory space that consists of 8 pages. The physical memory contains 4 pages where the page size is 4Kbytes. Assume that at sp
How can the deadlock be prevented Bankers algorithm : The Resource allocation graph algorithm isn't applicable to a resource allocation system with multiple instances of every
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