Chapter 2 – Operating System Overview TRUE/FALSE QUESTIONS: 1) An OS should be constructed in such a way as to permit the effective development‚ testing‚ and introduction of new system functions without interfering with service. (True) 2) The OS masks the details of the hardware from the programmer and provides the programmer with a convenient interface for using the system. (True) 3) The ABI gives a program access to the hardware resources and services available in a system through the user
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Operating system ABCs An operating system‚ or OS‚ is a software program that enables the computer hardware to communicate and operate with the computer software. Without a computer operating system‚ a computer would be useless. Operating system types As computers have progressed and developed so have the operating systems. Below is a basic list of the different operating systems and a few examples of operating systems that fall into each of the categories. Many computer operating systems will
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thread; this is a type of threading in which all of the work of thread management is done by the kernel. Thread; this is a single execution path‚ with an execution stack‚ processor stack‚ and scheduling information. Review Questions 4.1 Table 3.5 lists typical elements found in a process control block for an unthreaded OS. Of these‚ which should belong to a thread control block and which should belong to a Process control block for a multithreaded system? Identifiers will
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1. Computer System Components (i) Hardware Provides basic computing resources (CPU‚ memory‚ Input/output (I/O) devices). (ii) Operating System (OS) Controls and coordinates the use of the hardware among the various application programs for the various users. (iii) Applications Programs /Application Software Define the ways in which the system resources are used to solve the computing problems of the users (compilers‚ database systems‚ video games‚ business programs). (iv) Users
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ADVANTAGES AND DISADVANTAGES OF USING INTERNET In the history of human mankind‚ the Internet has undoubtedly been the greatest development in the domain of communication industry. Internet has tremendous potentials and a lot to offer in terms of services. However‚ if examined carefully‚ the Internet appears to have not only advantages but also some drawbacks. One good point is that the Internet is a source of information. There is a huge amount of information available on the Internet for just
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The Advantages and Disadvantages of Communicative Language Teaching The Advantages and Disadvantages of Communicative Language Teaching By HAH Introduction The focus of this essay is to highlight the advantages and disadvantages of Communicative Language Teaching (CLT). In doing so‚ it is important to first clarify the meaning of CLT and it’s place in the ongoing history of language teaching methodology. CLT is generally accepted as the most recognized‚ contemporary approach to language
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INTRODUCTION Operating system (OS) is a set of programs that acts as an interface between user and computer hardware. It also manages the internal resources of a computer like control Unit‚ arithmetic logic unit‚ memory unit‚ I/O unit etc. simply we can say that operating system (OS) is a communication channel between the user and the computer machine. It is must for any computer system because the OS is only: The one program that runs at all the times on the computer. The program that
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Chapter no | Topic | 1 | Introduction‚ Types ‚ Computer System Overview | 2 | Operating System Structure‚ Components and Functions‚ Virtual Machine | 3 | Process Concept‚ Operation‚ Process scheduling‚ symmetric multi -processing‚ Cooperating Processes | 4 | Thread Concept‚ Thread Vs Process‚ IPC ‚kernel ‚microkernel | 5 | Scheduling‚ Types‚ Scheduling in batch‚ interactive and real-time systems (SJN‚ SJF‚ FIFO‚ LJN‚ round-robin‚ priority scheduling‚ and hybrid schemes). | 6 | Deadlock:
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Operating System An operating system (OS) is a collection of software that manages computer hardware resources and provides common services for computer programs. It is a program designed to run other programs on a computer. The operating system is an essential component of the system software in a computer system. Application programs usually require an operating system to function. Time-sharing operating systems schedule tasks for efficient use of the system and may also include accounting software
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its lifetime. Operating system takes care of selecting the processes from these queues in some fashion. Selecting process is done by the the appropriate scheduler. Types of scheduling: Short - term (or) CPU Scheduler Medium – term Long – term (or) Job Scheduler Short – Term Scheduler: Short term scheduler selects the processes that are ready to execute and allocates CPU to one of them. Medium – Term Scheduler: Medium term scheduler is introduced by some operating systems such as time sharing
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