Introduction

Question 1

What does an operating system provide?

Answer 1

1. Resource management
2. Inter-process communication
3. Protection (isolation and access control)
4. Services to user programs (system calls)

Question 2

3 Major Subsystems of an OS

Answer 2

1. User Space
2. Kernel
3. Hardware

Question 3

Kernel Responsibilities

Answer 3

1. Process management
2. Memory management
3. Device management

Question 4

Layered Design

Answer 4

User programs -> libs -> Core kernel -> Kernel I/O subsystems -> Driver -> Controller -> Device