next‚ and that the arm is originally positioned at Track 15 moving toward the low-numbered tracks‚ compute how long it will take to satisfy the following requests: 4‚ 40‚ 11‚ 35‚ 7‚ and 14 Using the LOOK policy All request are present in the wait queue Ignore rotational time and transfer time; just consider seek time 1. How does the result compare with Fig. 7.16? START FINISH TRAVELED 5 10 15 20 25 30 35 40 15 14 1 X
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Components of an Operating System In order to perform the actions requested by the computer’s users‚ an operating system must be able to communicate with those users. The portion of an operating system that handles this communication is often called the user interface. Older user interfaces‚ called shells‚ communicated with users through textual messages using a keyboard and monitor screen. More modern systems perform this task by means of a graphical user interface (GUI) in which objects to be
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Networking Operating Systems: Analysis and Comparison There are several Network Operating Systems available to the public. The three most common are Windows Server 2003‚ Novell NetWare‚ and Unix based systems such RedHat Linux .Each one of these operating systems have unique advantages as well as sharing many common features with each of the other operating systems. Microsoft Server 2003 is one of the most popular network operating systems on the market today. Microsoft 2003 offers a host benefits
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printf("Process : pid = %d \n"‚pid); return 0; } Output : Number of process = 8. 3.8 Describe the differences among short-term‚ medium-term‚ and longterm scheduling. Sol: Scheduler : A process moves among different scheduling queues throughout 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
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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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Definition of Operating System: An Operating system is a program that controls the execution of application programs and acts as an interface between the user of a computer and the computer hardware. Need of an operating system: When a program written in a high level language is executed by a computer‚ the following steps are followed… The compiler to translate the program is loaded in the memory. The source program is read and loaded in the memory. The source program is compiled into object program
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2050243-MAJOR IX MODERN OPERATING SYSTEM 1. The operating system is the most important program that runs on a computer. Every general-purpose computer must have an operating system to run other programs. Operating systems perform basic tasks‚ such as recognizing inputfrom the keyboard‚ sending output to the display screen‚ keeping track of filesand directories on the disk‚ and controlling peripheral devices such as disk drives and printers. 2. The kernel is a program that constitutes the
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Q: Compare different economic systems. A: There are several similarities between the 4 economic systems. First off‚ I will explain what each economic system is and some countries that they are associated with. The first one is the traditional economic system. This is one is the original economy and everyone creates their own goods. They must rely on fishing‚ hunting‚ and agriculture in order to create a living. They barter with other families or individuals their goods. This type of economic system
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Introduction to Operating Systems Paper To understand three operating systems‚ you must first know what an operating system is. An operating system is software that controls the computer. It manages hardware‚ run applications‚ provides’ an interface for uses‚ stores‚ retrieves files. Here are three operating systems DOS‚ Windows 2000‚ and Linux. DOS‚ which is a disk operating system was the first OS within IBM computers. DOS was the operating system utilized by early versions of Windows including
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ROS (Robot Operating System) is a framework for robot software development‚ providing operating system-like functionality on top of a heterogenous computer cluster. ROS was originally developed in 2007 under the name switchyard by the Stanford Artificial Intelligence Laboratory in support of the Stanford AI Robot (STAIR[1]) project. As of 2008‚ development continues primarily at Willow Garage‚ a robotics research institute/incubator‚ with more than twenty institutions collaborating in a federated
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