UNIT 1 LINUX SYSTEM ARCHITECTURE Structure 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 1.10 1.11 1.12 1.13 Introduction Objectives Internal Structure of Linux System Architecture Overview of the Kernel System Supporting Multiple Developers System Data Structure Subsystem Architecture Linux File System More About Kernel Miscellaneous Concerns Let Us Sum Up Check Your Progress: The Key Suggested Reading Linux System Architecture 1.0 INTRODUCTION Architecture is the main blood line of any technology
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What are the two differences between user-level and kernel-level threads? Under what circumstances is one type is better than other? Answer: 1- User-level threads are unknown by the kernel‚ whereas the kernel is aware of kernel threads. 2- On systems using either M: 1 or M: N mapping‚ user threads are scheduled by the thread library and the kernel schedules kernel threads. 3- Kernel threads need not be associated with a process whereas every user thread belongs to a process. Kernel threads are
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File Systems The file system provides the environment for working with files and folders. Windows uses FAT12‚ FAT16‚ FAT32 and/or NTFS with NTFS almost always being the best choice. Linux also has a number of its own native file systems. The default file system for Linux used to be ext2‚ now it is typically ext3. MS-DOS used to be and Microsoft Windows continues to be the most popular operating system for 80386‚ 80486‚ and Pentium PCs. Because Linux started on 80386/80486 PCs‚ a connection
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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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HISTORY OF OPERATIMG SYSTEMS Operating systems (OS) provide a set of functions needed and used by most application programs on a computer‚ and the linkages needed to control and synchronize computer hardware. On the first computers‚ with no operating system‚ every program needed the full hardware specification to run correctly and perform standard tasks‚ and its own drivers for peripheral devices like printers and punched paper card readers. The growing complexity of hardware and application programs
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CVE listing is a dictionary of publicly known information security vulnerabilities and exposures. IT is hosted by the Office of Cybersecurity and Communications at the U.S. Department of Homeland Security 5. Can Zenmap GUI detect which operating systems are present on IP servers and workstations? Which option includes that scan? Yes‚ the OS detection using TCP/IP stack fingerprinting option includes that scan. 6. If you have scanned a live host and detected that it is running Windows
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Practical – 1 Chalk out the storyboard and design of Diary Food Limited. As the name reflects your site Dairy Products and aims at opening on online store. Your storyboard should cover all the features that you plan to have on the site. Design of online dairy products Online shopping Welcome to Online Store List of dairy Products Products Rates Milk 20Rs./Kg Curd 20Rs./Kg
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Operating System Basics Functions of Operating Systems • An operating system is the software on a computer that manages the way different programs use its hardware‚ and regulates the ways that a user controls the computer. • Provide a user interface • Run programs • Organized file storage Types of Operating Systems • Real-time operating system – Very fast small OS – Built into a device – Respond quickly to user input – MP3 players
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Linux‚ the Operating System of Choice Name Institution Abstract This paper argues that Linux has not only emerged as a competitor to both Microsoft Windows and Macintosh operating systems‚ but is a better choice. The popularity of Linux has grown noticeably‚ with a recent surge in the use and adoption of Linux operating system by individuals and organizations across the world. I have examined various factors‚ including code accessibility‚ cost concerns‚ security issues‚ distrust of monopolies
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Research report on Mobile Operating systems FINAL PAPER This paper provides detailed information about the various features of two major mobile operating systems i.e Android and the iOS. This paper also compares and contrasts their applications from the system and the user point of view 2012 TABLE OF CONTENTS 1) General Introduction 2) Introduction to Android OS 2.1)
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