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What is an operating system? An operating system is a program that acts as a mediator between a user and the computer hardware. The function of an operating system is to provid
Define the difference between preemptive and nonpreemptive scheduling. State why strict nonpreemptive scheduling is unlikely to be used in a computer center. Preemptive schedul
Q. Presume an operating system maps user-level threads to the kernel using the many-to-many model and the mapping is done through LWPs. Additionally the system allows developers to
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
Q. Which of the subsequent instructions should be privileged? a) Read the clock b) Clear memory c) Set value of timer d) Issue a trap instruction e) Turn off interr
Describe Three major roles of operating systems in business computer systems
Q. Explain application of consumer behaviour? Consumer behaviour is described as the dynamic interaction of affect and cognition and behaviour and the environment by human bein
What is indexed allocation? Every file has its own block of pointers to the sectors of the file.
What is the information associated with an open file? Various pieces of information are associated with an open file which may be: File pointer Disk location of th
Q. Describe the three main architectural layers of Windows XP? Answer: (1) The HAL (Hardware Abstraction Layer) creates operating system portability by hiding hardware differ
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