Operating system
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The document discusses various operating system structures including batch, time-sharing, distributed, and network operating systems. It describes the layers of common operating system architectures like UNIX with the kernel providing core functions and systems programs interfacing with hardware. Finally, it analyzes hybrid operating system designs used by Linux, Solaris, Windows, iOS, and Android that combine aspects of monolithic and microkernel-based systems.
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Group 5 Report Effect
The document discusses several different operating systems:
- WebOS describes network services for internet-scale distributed computing. It can also refer to web-based desktop environments like eyeOS.
- Amoeba OS was a research project to connect multiple computers seamlessly. It had a distributed networking architecture.
- Desktoptwo is a free web-based desktop environment that mimics the look and feel of a traditional desktop OS. It requires Adobe Flash and has applications built with PHP.
Windows 7 Architecture
History
Description of Windows Architecture
Layered Architecture
Portability
System Components
Processes & Threads
Kernel Scheduling
Object Manager
Virtual Memory Management
File System
Memory Management
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Overview about services of OS, System Programs, System Calls, user and operating system interface, categories of system calls and API's
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This document provides an overview of key Linux operating system fundamentals including: the Linux boot process; systemctl for managing services; process and memory management; filesystems; package management; kernel parameters; and shells. It outlines several common Linux directories and filesystem concepts. The document also describes process types in Linux and different types of memory. It discusses mounting, unmounting, and formatting filesystems as well as inodes. Linux package management topics such as repositories, installing, removing, updating, and listing packages are covered. Finally, it briefly discusses shells, shell profiles, environment variables, and popular shell types in Linux.
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Presentation On Operating system
In this , I add the Some Basic Idea of Operating System. It Include :-
1) Introduction and Background
2) Structure and Background
3) Main Function Of Operating System
4) Some Popular Operating System
5) Objective Of Operating System
6) Conclusion
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The document discusses several different operating systems:
- WebOS describes network services for internet-scale distributed computing. It can also refer to web-based desktop environments like eyeOS.
- Amoeba OS was a research project to connect multiple computers seamlessly. It had a distributed networking architecture.
- Desktoptwo is a free web-based desktop environment that mimics the look and feel of a traditional desktop OS. It requires Adobe Flash and has applications built with PHP.
Windows 7 Architecture
History
Description of Windows Architecture
Layered Architecture
Portability
System Components
Processes & Threads
Kernel Scheduling
Object Manager
Virtual Memory Management
File System
Memory Management
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Overview about services of OS, System Programs, System Calls, user and operating system interface, categories of system calls and API's
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This document provides an overview of key Linux operating system fundamentals including: the Linux boot process; systemctl for managing services; process and memory management; filesystems; package management; kernel parameters; and shells. It outlines several common Linux directories and filesystem concepts. The document also describes process types in Linux and different types of memory. It discusses mounting, unmounting, and formatting filesystems as well as inodes. Linux package management topics such as repositories, installing, removing, updating, and listing packages are covered. Finally, it briefly discusses shells, shell profiles, environment variables, and popular shell types in Linux.
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This document discusses various security issues related to computer systems and networks. It covers authentication methods, threats like Trojan horses and viruses, intrusion detection techniques, and encryption standards. It also describes security classifications from the Department of Defense and how Windows NT implements configurable security policies ranging from minimal to discretionary protection.
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Now here we explained the windows architecture. The inside view of Microsoft Windows. The architecture of Windows NT, a line of operating systems produced and sold by Microsoft, is a layered design that consists of two main components, user mode and kernel mode.
Presentation On Operating system
In this , I add the Some Basic Idea of Operating System. It Include :-
1) Introduction and Background
2) Structure and Background
3) Main Function Of Operating System
4) Some Popular Operating System
5) Objective Of Operating System
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Operating system
- 1. Name: Nasrin akter borsha ID:182-15-2133 Section: PC(A) Course code: CSE323 | Operating-System Structures ASSIGNMENT
- 2. An operating system is system softwarethat manages computer hardware, softwareresources, and provides common services for computer programs. Various Types of OS: Batch OS, Time Sharing OS, Distributed OS, Network OS (LAN), Real time OS. Operating-System Structures Operating System Services: Almostall operating systemshaveanuser interface. Has I/O operation. Programs needs file to read/write to run, delete data. It can execute program . It can detect errors . It has strong security system and many resource allocations here. System Calls: System-callinterface maintains a table indexed according to given numbers.Herethe userswillnotknowabout it butneed to obey API as byAPI Most details of OS interface hidden. UNIX: The UNIX OS consists of two separable parts; 1. Systems programs: Itworksbelow thesystem-callinterface and above the physicalhardware to consists of everything. 2. The kernel: Provides the file system, CPUscheduling, memory management, and other operating-systemfunctions; a large number of functions for one level. Layered Approach: Operating systemhas two layers. The bottom layer called layer0 that is the hardware; the highest called layer N is the user interface. Microkernel System Structure: MicrokernelSystemStructure Communication takes place between user modules using messagepassing. Ithas somebenefits because it is easier to extend a microkernel and to portthe operating systemto new architectures. Itis morereliable and more secure. Modules: Mostmodern operating systems implement loadable kernel modules. Ituses object-oriented approach and core component is separate. Each is loadable as needed within the kernel and more flexible and Linux, Solaris, etc.
- 3. Applications Application Framework Android runtime Core Libraries Dalvik virtual machine Libraries Linux kernel SQLite openGL surface manager webkit libc media framework Hybrid Systems: Hybrid combines multiple approaches to address performance, security, usability needs. Fromthem; Linux and Solaris kernels in kernel address space, so monolithic, plus modular for dynamic loading of functionality and Windows mostly monolithic, plus microkernelfor different subsystempersonalities. iOS: Apple mobile OS for iPhone, iPad it is Structured on Mac OS X, does not run OS X applications natively. Cocoa Touch Objective-CAPI for developing apps. Media services layer for graphics, audio, video Android: It is an open source, Developed by Open Handset Alliance (mostly Google) Itis kind of Similar stack to IOS. Runtimeenvironment includes core set of libraries and Dalvik virtual machine. The basement of its on Linux kernel but modified 1. Provides process, memory, device-driver management 2. Adds power management Diagram: Android Architecture