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What is an I/O subsystem?
The control of devices connected to the computer is a main issue while designing operating systems. Because I/O deices differ widely in their function and speed, varied methods are required to control them. These processes form the I/O subsystem of the kernel, which divide the rest of the kernel from the managing I/O devices
Demand paging With demand paging, a page is called into memory only when a location on that page is actually indexed during run time. With pre-paging, pages other than the one
Explain the concept of Reentrancy? It is a useful, memory-saving method for multiprogrammed timesharing systems. A Reentrant Procedure is one in which many users can share a si
Define an assembly language Assembly language stands for a Low level programming language
What is process control block? Every process is represented in the OS by a process control block. It has many pieces of information associated with an exact process.
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What is Demand paging? Virtual memory is commonly executed by demand paging. In demand paging, the pager brings only those essential pages into memory instead of swapping in a
what is file?explain the file access methods?
LINUX VS WINDOWS I/O MANAGEMENT
what is exit status
How does communication takes place in a distributed system? Distributed systems depend on the networking for their functionality. A network is a communication path among two
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