Understanding User Mode And Kernel Mode In GATE Operating System

Welcome to our YouTube channel! In today's video, we're diving deep into the fundamental concepts of User Mode and Kernel Mode in the operating system, specifically tailored for GATE exam preparation.

Video Description:

In the world of operating systems, understanding User Mode and Kernel Mode is crucial. Whether you're a computer science student or preparing for competitive exams like GATE, this video is a must-watch.

What is User Mode?
User Mode is a restricted mode in which the operating system executes user applications. Programs running in User Mode have limited access to system resources and cannot directly manipulate hardware or sensitive system data.

What is Kernel Mode?
Kernel Mode, on the other hand, is the privileged mode where the operating system's core components reside. In this mode, the OS has unrestricted access to the hardware and can execute critical tasks like managing memory, handling interrupts, and controlling device drivers.

Key Differences Between User Mode and Kernel Mode:

Access Level: User Mode has restricted access, while Kernel Mode has full access to system resources.
Privilege: User Mode is non-privileged, and Kernel Mode is privileged.
Protection: User Mode protects applications from interfering with the system, ensuring stability and security.
System Calls: User Mode applications request services from the operating system through system calls, which transition the processor to Kernel Mode temporarily.

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