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Q. Describes responsibilities of the I/O manager?
Answer: The I/O manager is responsible for file systems and device drivers and network drivers. The I/O manager keeps follow of which device drivers, filter drivers, and file systems are loaded and manages buffers for I/O requests. It furthermore assists in providing memory mapped file I/O and controls the cache manager for the whole I/O system.
What are the objectives of operating system? Objectives of OS 1. Convenience: An OS makes a computer more suitable to use. 2. Efficiency : An OS allows t
Define a state which is not a fundamental process state Answer: Blocked state is not a fundamental process state
case study:interprocess communication
#question After working for 30 years, Ramjee Somjee Dutt opted for VRS and started a courier company and did very well in the first four years. He was now looking for expansion of
Clustered file organization A clustered file is also called a B-tree-clustered file is a tree-structured file in which records with adjacent index values are clustered toget
What is the main function of the memory-management unit? The runtime mapping from virtual to physical addresses is done by a hardware device known as a memory management unit (
how response times are reduced by allowing time sharing on top of multiprogramming
What is a Relocatable program? The Relocatable programs can be loaded almost anywhere in memory.
There are three kinds of Data Abstraction: Physical level: The minimum level of abstraction defines how data are saved. Logical level: The next bigger level of a
Some CPUs provide for more than two modes of operation. What are two possible uses of these multiple modes?
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