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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
In modern operating systems, applications do not directly access the physical memory. Instead, they use so-called virtual memory, where each virtual address is translated to a phys
Q. Explain the Concept of Process? A process is sequential program in execution. A process states the basic unit of computation for the computer. Components of process are:
Problem: a) Define a ‘file' and list the objectives of the file management system. b) List the ways in which programs access files and determine for what file types you woul
State critical section problem? Discuss three solutions to solve the critical section problem. C-S Problem:- n processes all competing to use some shared data Every
what is the latest OS of ANDROID in US
Question: (a) i. Consider Active Directory as a database, then for each type and new class of objects, what is created? ii. What is the purpose of the global catalog? ii
what are disadvantages of using single directory
Write a program that will input two numbers from the keyboard and execute each of the signed and unsigned multiply and divide instructions. For each instruction, the program shoul
The question of fairness, regarding page eviction, is a hard one. How do we decide what is fair? Many operating systems use global LRU, where pages from all processes are managed t
why we say " OS is a resource allocator" and “OS is a control program"?
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