OPERATING SYSTEMS UNIT I Syllabus: Operating Systems
... 1. Explain the various types of computer systems. 2. Explain how protection is provided for the hardware resources by the operating system. 3. What are the system components of an operating system and explain them? 4. What are the various process scheduling concepts? 5. List five services provided b ...
... 1. Explain the various types of computer systems. 2. Explain how protection is provided for the hardware resources by the operating system. 3. What are the system components of an operating system and explain them? 4. What are the various process scheduling concepts? 5. List five services provided b ...
Computer Science 4302 - Angelo State University
... explore system I/O in depth, including I/O system design, interfaces, and internal system structures and functions. Performance issues associated with I/O devices will also be covered. 5. Protection and Security The student will learn the mechanisms necessary for the protection and security of compu ...
... explore system I/O in depth, including I/O system design, interfaces, and internal system structures and functions. Performance issues associated with I/O devices will also be covered. 5. Protection and Security The student will learn the mechanisms necessary for the protection and security of compu ...
Introduction to Computer and Operating Systems
... – Huge range, including denial-of-service, worms, viruses, identity theft, theft of service Systems generally first distinguish among users, to determine who can do what – User identities (user IDs, security IDs) include name and associated number, one per user – User ID then associated with all fil ...
... – Huge range, including denial-of-service, worms, viruses, identity theft, theft of service Systems generally first distinguish among users, to determine who can do what – User identities (user IDs, security IDs) include name and associated number, one per user – User ID then associated with all fil ...
Introduction to Computer and Operating Systems
... – Huge range, including denial-of-service, worms, viruses, identity theft, theft of service Systems generally first distinguish among users, to determine who can do what – User identities (user IDs, security IDs) include name and associated number, one per user – User ID then associated with all fil ...
... – Huge range, including denial-of-service, worms, viruses, identity theft, theft of service Systems generally first distinguish among users, to determine who can do what – User identities (user IDs, security IDs) include name and associated number, one per user – User ID then associated with all fil ...
Introduction
... • UNIX – consists of two separable parts – Systems programs – The kernel • Consists of everything below the system-call interface and above the physical hardware • Provides the file system, CPU scheduling, memory management, and other operating-system functions; a large number of functions for one l ...
... • UNIX – consists of two separable parts – Systems programs – The kernel • Consists of everything below the system-call interface and above the physical hardware • Provides the file system, CPU scheduling, memory management, and other operating-system functions; a large number of functions for one l ...
hand-out - Jan Thorbecke
... • UNIX – limited by hardware functionality, the original UNIX operating system had limited structuring. The UNIX OS consists of two separable parts • Systems programs • The kernel • Consists of everything below the system-call interface and above the physical hardware • Provides the file system, CPU ...
... • UNIX – limited by hardware functionality, the original UNIX operating system had limited structuring. The UNIX OS consists of two separable parts • Systems programs • The kernel • Consists of everything below the system-call interface and above the physical hardware • Provides the file system, CPU ...
Operating Systems
... – Developments Leading to Modern Operating Systems – Microsoft Windows Overview – UNIX Systems – Linux ...
... – Developments Leading to Modern Operating Systems – Microsoft Windows Overview – UNIX Systems – Linux ...
Introduction to Operating System Concepts Free books Specialist
... CPU is time multiplexed among several jobs that are kept in memory and on disk (CPU is allocated to a job only if the job is in memory) ...
... CPU is time multiplexed among several jobs that are kept in memory and on disk (CPU is allocated to a job only if the job is in memory) ...
Operating System
... May want to keep track of which users use how much and what kind of resources. Could be useful for billing or for usage statistics. When several separate processes execute concurrently, it should not be possible for one process to interfere with the others or with the operating system itself. Securi ...
... May want to keep track of which users use how much and what kind of resources. Could be useful for billing or for usage statistics. When several separate processes execute concurrently, it should not be possible for one process to interfere with the others or with the operating system itself. Securi ...
Application of Operating System Concepts to Coordination in
... natural interface to the system in some circumstances. Other systems for discovering and controlling network devices such as UPnP provide part of the needed functionality, but not a complete solution. In particular, UPnP provides discovery, communications, and control capabilities; it is analogous t ...
... natural interface to the system in some circumstances. Other systems for discovering and controlling network devices such as UPnP provide part of the needed functionality, but not a complete solution. In particular, UPnP provides discovery, communications, and control capabilities; it is analogous t ...
Introduction - Stanford Secure Computer Systems Group
... System calls (continued) • Goal: Do things app. can’t do in unprivileged mode - Like a library call, but into more privileged kernel code • Kernel supplies well-defined system call interface - Applications set up syscall arguments and trap to kernel - Kernel performs operation and returns result • ...
... System calls (continued) • Goal: Do things app. can’t do in unprivileged mode - Like a library call, but into more privileged kernel code • Kernel supplies well-defined system call interface - Applications set up syscall arguments and trap to kernel - Kernel performs operation and returns result • ...
System Software
... commands, at a time. Those systems were called single-stream batch processing systems because programs and data were submitted in groups or batches. A batch processing system takes a “batch” of jobs, executes them and returns the results, all without human intervention. Those jobs are typically take ...
... commands, at a time. Those systems were called single-stream batch processing systems because programs and data were submitted in groups or batches. A batch processing system takes a “batch” of jobs, executes them and returns the results, all without human intervention. Those jobs are typically take ...
Design of OSes
... • Typically written in a high-level language (C or C++) • Mostly accessed by programs using APIs • Three most common APIs: – Win32 API for Windows – POSIX API for POSIX-based systems (UNIX, Linux, Mac OS X) – Java API for the Java virtual machine (JVM) ...
... • Typically written in a high-level language (C or C++) • Mostly accessed by programs using APIs • Three most common APIs: – Win32 API for Windows – POSIX API for POSIX-based systems (UNIX, Linux, Mac OS X) – Java API for the Java virtual machine (JVM) ...
FileSystems
... Can simulate last two with first method by inserting appropriate control characters. Need at least executable binary and data Type indicated by “type” extension Resource fork (Mac) Magic number (UNIX) More complexity requires more OS support ...
... Can simulate last two with first method by inserting appropriate control characters. Need at least executable binary and data Type indicated by “type” extension Resource fork (Mac) Magic number (UNIX) More complexity requires more OS support ...
CST1215 Operating System Fundamentals
... 11. Identify the roles of system measurement tools such as positive and negative feedback loops. 12. Identify system monitoring techniques. 13. Identify advantages and disadvantages of MS-DOS including basic commands. 14. Demonstrate proficiency with the OS Command Line of Windows and Linux which in ...
... 11. Identify the roles of system measurement tools such as positive and negative feedback loops. 12. Identify system monitoring techniques. 13. Identify advantages and disadvantages of MS-DOS including basic commands. 14. Demonstrate proficiency with the OS Command Line of Windows and Linux which in ...
Distributed Systems Major Design Issues
... Concurrent processes must have mutual exclusion when accessing a critical shared resource. ...
... Concurrent processes must have mutual exclusion when accessing a critical shared resource. ...
Distributed Systems Major Design Issues
... Concurrent processes must have mutual exclusion when accessing a critical shared resource. ...
... Concurrent processes must have mutual exclusion when accessing a critical shared resource. ...
Introduction
... Personal computer operating systems Real-time operating systems Embedded operating systems Smart card operating systems ...
... Personal computer operating systems Real-time operating systems Embedded operating systems Smart card operating systems ...
Operating Systems
... – Accessing different media but presenting a common interface to users – Provides protection in multi-access systems ...
... – Accessing different media but presenting a common interface to users – Provides protection in multi-access systems ...
Chapter One
... Use the passwd command UNIX allows new password if: The new password differs by at least three characters It has six or more characters, including at least two ...
... Use the passwd command UNIX allows new password if: The new password differs by at least three characters It has six or more characters, including at least two ...
Operating System Overview
... – Adds the concept of a procedure or subroutine, plus call/return operations ...
... – Adds the concept of a procedure or subroutine, plus call/return operations ...
system call - efreidoc.fr
... all operating system data structures are visible to all operating system code code in procedures are dependent upon knowledge of structure/operation of other ...
... all operating system data structures are visible to all operating system code code in procedures are dependent upon knowledge of structure/operation of other ...
Plan 9 from Bell Labs
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Plan 9 from Bell Labs is a distributed operating system, originally developed by the Computing Sciences Research Center at Bell Labs between the mid-1980s and 2002. It takes some of the principles of Unix, developed in the same research group, but extends these to a networked environment with graphics terminals.In Plan 9, virtually all computing resources, including files, network connections, and peripheral devices, are represented through the file system rather than specialized interfaces. A unified network protocol called 9P ties a network of computers running Plan 9 together, allowing them to share all resources so represented.The name Plan 9 from Bell Labs is a reference to the Ed Wood 1959 cult science fiction Z-movie Plan 9 from Outer Space. Also, Glenda, the Plan 9 Bunny, is presumably a reference to Wood's film Glen or Glenda. The system continues to be used and developed by operating system researchers and hobbyists.