2. Tell me what is an interrupt?

In systems programming, an interrupt is a signal to the processor emitted by hardware or software indicating an event that needs immediate attention.

4. Explain a process?

Explain your self.

5. What is an operating system?

An operating system (OS) is a collection of software that manages computer hardware resources and provides common services for computer programs. The operating system is an essential component of the system software in a computer system. Application programs usually require an operating system to function.