Operating System
Introduction
An Operating System (OS) is system software that acts as an interface between the user and the computer hardware. It manages hardware resources and provides essential services for application software.
Components of an Operating System
- Kernel: Core of the OS, managing hardware resources and system calls.
- Shell: Interface between user and OS (CLI or GUI).
- File System: Organizes and manages files in storage.
- Device Drivers: Enables communication between OS and hardware devices.
Examples of Popular Operating Systems
- Windows OS: Developed by Microsoft, widely used in personal computers.
- Linux OS: Open-source and widely used for servers.
- MacOS: Developed by Apple for Mac computers.
- Android & iOS: Mobile operating systems used in smartphones.
Qus. 1 : Which of the following is not a programming language?
- UNIX
- LISP
- BASIC
- JAVA
- Android
- MAC
- Samsung
- LINUX
- USA
- UK
- INDIA
- China
- Graphical User interface
- Geographical user of internet
- Giga uses internet
- Graphical unlimited interface
- Unix
- Linux
- DOS
- None of these
- Input
- output
- operating system
- hardware
- Low level language
- Medium level language
- High level language
- None
- Chmod
- curl
- df
- all
- Kernel
- Access
- Process
- None
- Input
- Output
- Operating system
- Hardware
- Window phone
- Android
- BADA
- All of the above
- Application Software
- System software
- Utility program
- None of these
- 2
- 4
- 1
- 6
- Lollipop
- Marshmallow
- Nougat
- Oreo
- Compiler
- Loader
- Assembler
- Operating system
- Time sharing
- Multitasking
- Only Time sharing
- Both Time sharing and Multitasking
- I/O
- Process management
- Compilation
- File management
- Desktop
- Hard disk
- Pendrive
- Services
- Task Manager
- Task Bar
- Program Manager
- Device Driver
- screen
- screenshot
- prt scr
- Ctrl+Alt+Del
- Ctrl+Shift+Del
- Ctrl+Alt+4
- Ctrl+Alt+F10
- Memory
- Hardware
- Peripheral
- Screen
- 1 → 4 → 3 → 2
- 4 → 3 → 2 → 1
- 3 → 2 → 4 → 1
- 4 → 1 → 2 → 3