Lesson-3-Operation-System-Support.pptx-I

IT

1. Operating System (OS) Support

2. What is operating syste m ( os )?

3. Operating system ( os ) Definition: An Operating System (OS) is system software that acts as an intermediary between the user and the computer hardware . It manages hardware resources (CPU, memory, storage, devices). It provides services and a platform for applications to run.

4. What is operating syste m ( os ) support?

5. operating system ( os ) support? Definition: The role of the Operating System in managing hardware, software, and user interactions. Importance: Provides a platform for applications. Ensures efficient use of computer resources.

6. Core Functions of OS Support

7. Core Functions of OS Support 1. Process Management Handles creation, scheduling, and termination of processes. Supports multitasking and multiprocessing . 2. Memory Management Allocates and deallocates memory for programs. Uses techniques like paging and segmentation. Manages virtual memory. 3. File System Management Organizes, stores, retrieves, and manages data on storage devices. Provides directories, permissions, and access control .

8. Core Functions of OS Support 4. Device Management Provides drivers for communication with hardware. Manages I/O operations and buffering. 5. Security and Protection Ensures authentication, authorization, and access control. Protects data and resources from threats. 6. User Interface Support Provides CLI (Command-Line Interface) and GUI (Graphical User Interface). Enables user interaction with the system .

9. Advanced OS Support Features

10. Advanced OS Support Features 1. Networking Support What it means: The OS provides built-in support for networking so computers can communicate with each other. Key components: TCP/IP Stack – The foundation of internet communication (e.g., sending emails, browsing websites). Sockets – Software endpoints that allow programs to send and receive data across a network. Protocols – Rules that define how data is transmitted (HTTP, FTP, DNS, etc .). Example: When you open a web browser, the OS manages the network protocols that connect your computer to the internet.

11. Advanced OS Support Features 2. Virtualization What it means: The OS can create virtual machines (VMs) or containers , allowing multiple environments to run on the same hardware. Benefits: Run different operating systems (e.g., Windows on a Mac). Better use of hardware resources. Isolates apps for security . Example: Using VMware or VirtualBox to run Linux inside a Windows system. Containers (like Docker ) for deploying applications.

12. Advanced OS Support Features 3. Fault Tolerance & Recovery What it means: The OS has mechanisms to detect failures and recover from crashes or errors without major data loss. Features: Checkpoints & Backups – Saves system state so recovery is possible. Error Handling – Gracefully manages crashes. Redundancy Support – Works with RAID or backup systems . Example: If Windows crashes, it can run Startup Repair . Linux servers may use journaling file systems (EXT4) to recover after power failures.

13. Advanced OS Support Features 4. System Performance Monitoring What it means: The OS provides tools to track and analyze resource usage (CPU, memory, disk, network ). Purpose : Helps diagnose performance issues . Allows administrators to optimize system performance . Examples : Windows: Task Manager, Performance Monitor . Linux: top, htop , vmstat . macOS : Activity Monitor.

14. Examples of OS Support in Practice

15. Examples of OS Support in Practice 1. Windows OS Plug-and-Play Device Drivers Windows automatically detects and installs drivers when you connect devices (USB, printer, external hard drive). Example: Plugging in a USB mouse, and it works instantly without manual setup . GUI (Graphical User Interface) Support User-friendly interface with desktop, start menu, icons, and taskbar. Example: Easy navigation for users through clicks, menus, and windows.

16. Examples of OS Support in Practice 2. Linux OS Strong Process Control Provides powerful tools to manage processes, multitasking, and permissions. Example: Using the top or htop command to monitor running processes in real-time. Open-Source Flexibility Users can customize the OS kernel, install different desktop environments, or modify source code. Example: Ubuntu for beginners, Kali Linux for security testing, CentOS for servers.

17. Examples of OS Support in Practice 3. macOS Seamless Hardware-Software Integration Designed specifically for Apple hardware ( MacBooks , iMacs), ensuring smooth performance and stability. Example: macOS updates are optimized for Apple devices, unlike Windows which must support many hardware brands . Advanced UI (User Interface) Known for sleek, intuitive, and visually appealing design. Example: Features like Mission Control, Spotlight Search, and gestures on trackpads.

18. Examples of OS Support in Practice 4. Mobile OS (Android/iOS ) App Support Both have vast app ecosystems (Google Play Store, Apple App Store). Example: Social media, banking, productivity apps all run smoothly . Device Security Includes app sandboxing, biometric authentication (fingerprint, face ID), and regular updates. Example: iOS Face ID or Android fingerprint unlock . Connectivity Supports Wi-Fi, Bluetooth, 4G/5G, and hotspot features. Example: Sharing mobile data through a hotspot to connect laptops.

19. THANK YOU..