OS

OS

1. What is an Operative System?

   • is software that acts as
     • intermediary between the user and the hardware of a computer
   • manage and coordinate
     • hardware resources

2. organization of a computer

   • CPU (Central Processing Unit)
   • memory (RAM)
   • input/output devices
   • the way these components are connect and communicate

3. Structure of an operating system

   • is organized in several layers
     • Kernel (Núcleo)
       • core part of operating system
         • Control access to hardware resources
           • manage tasks like the administration of memory
     • Process management
       • This component manages the execution of the processes on the computer
     • Memory Management
       • It is responsible for managing RAM memory. Computer
     • File System
       • manages how they are stored, organized and access data on devices storage
     • Device management
       • Controls communication between the system operating and hardware devices
     • User interface
       • Provides a way to interact with the OS
     • Communication & Networking
       • Manage network connectivity, including settings networking, communication protocols and connection management to Internet.
     • Security and Access Control
       • Protects system and data against access Not allowed.
     • Virtual File System
       • Provides easy access to files and resources efficient through a hierarchical tree structure

4. operating system operations

   • Process management
     • Creation and termination of processes.
     • CPU Planning and Scheduling for the execution of processes.
     • Synchronization and communication between processes.
   • Memory Management
     • Memory allocation and release for processes.
     • Virtual memory management, including pagination and segmentation
     • memory protection for prevent unauthorized access.
   • Device management
     • Control and communication with hardware devices.
     • Administration of device drivers.
     • Handling interruptions and I/O (Input/Output) requests.
   • File and System Management of files
     • Create, read, write and file deletion
     • Organization and maintenance of File System
     • access control and file permissions
   • user interface
     • Provide an interface for users to interact with the operating system and applications
     • Manage the input and output of data through command line or graphical interfaces.
   • Network and Communications Management
     • Administration of network connections.
     • Implementation of communication protocols..
     • network configuration and name resolution
   • Security and Access Control
     • Control access to resources and data.
     • Authentication and authorization of users.
   • Energy Management
     • Power Management Control for mobile devices and systems.
     • Standby, hibernation, and shutdown hardware.
   • Maintenance and Diagnosis
     • System performance monitoring
     • Carrying out maintenance tasks, such as updates and patches

5. Types

   • Desktop Operating Systems
     • Windows
     • macOS
     • Linux
   • Mobile Operating Systems
     • Android
     • iOS
   • Server Operating Systems
     • Linux
     • Windows Server
   • Embedded Operating Systems
     • Linux y FreeRTOS
   • Real Time Operating Systems
     • VxWorks y QNX
   • Network Operating Systems
     • Cisco IOS y JunoS
   • Time Sharing Operating Systems
     • Linux Clusters y sistemas basados en Kubernetes
   • Network Time Sharing Operating Systems
     • Unix y Windows Server

6. Owen Andres Vargas Fuentes NRC:2342

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