What is Os and Kernel

Table of contents

Kernel

• The cors component of the OS.
• Manages the low level tasks like hardware, memory management and cpu scheduling.
• bridge between hardware and os.
• without os can't run os
• When start of computer that first load kernel.
• This is kernel responsibilites:
  • Process Management
  • Memory management
  • File System Management
  • System Calls Handling.

example: thing engine of car

Type	Description	Example
Monolithic Kernel	All OS services run in a single large block in kernel space.	Linux, Unix
Microkernel	Only essential services run in kernel space. Others run in user space.	Minix, QNX
Hybrid Kernel	Mixes both monolithic and microkernel designs.	Windows NT, macOS
Nano Kernel	Only provides hardware abstraction, relying on higher layers for management.	Some real-time OS
Exo Kernel	Exposes hardware to applications for maximum control.	Research OS

OS

• os is a GUI interface .
• It provied user-friendly environment.
• Responsibilites:
  • User Interface
  • Program exceution
  • Resource Management
  • Networking

example: Window os

How to work Process: