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Acyclic-graph directories
An acyclic graph permits directories to have shared subdirectories and files. The similar file or subdirectory may be in two dissimilar directories. A shared file is not the similar as two copies of the file. With the shared file, only one definite file exists, so any changes made by single person are immediately visible to other. Shared files and subdirectories can be executed in several ways. In UNIX shared files are executed by create a new directory entry known as a link. A link is effectively a pointer to another file or subdirectory.
Define a linker program A linker program links the program along with other programs required for its execution.
define pipe
What is the purpose of system calls? System calls permit user-level processes to request services of the operating system.
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what is file abstraction?
Invalid page fault :If a page fault happens for a reference to an address that's not part of the virtual address space, so that there could not be a page in memory corresponding
What is reference string We evaluate an algorithm by running it on a definite string of memory reference and computing the number of page faults. The string of memory reference
Write a short note about context switch. Switching the CPU to another process needs saving the state of the old process and loading the saved state for the new process. This ta
Sharing segments between processes without requiring the same segment number is possible in a dynamically linked segmentation system. a. Define a system that permits sta
what are the objective of operating system assignment
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