Introduction to OS
An operating system is system software that acts as an intermediary between a user of a computer and the computer hardware.
What is Operating System?
File system management
Mass-storage management
Cache management
Different types of storage management?
User Interfaces
Program Execution
I/O Operations
File-System Manipulation
Communications
Error Detection
What are services provided by OS for the users of the system?
A process is a program under execution
What is a process?
User mode
Kernel mode
Different modes of OS operations?
Real Time OS
Batch Operating System
Distributed Operating System
Time-Sharing Operating System
Embedded Operating System
Different types of OS?
Free-space management
Storage allocation
Disk scheduling
What are the responsibility of OS with disk management?
System calls is a means to access the services of the operating system generally written in C or C++, although some are written in assembly for optimal performance.
What are system calls?
The stack section
The heap section
The data section
The text section
What are the 4 sections of process memory?
Asymmetric multiprocessing
Symmetric multiprocessing
Different types of multiprocessor systems?
Hardware
Operating System
Application Program
Users
What are the 4 main components of computer system?
A file is a collection of related information defined by its creator.
What is a file?
1. Process Control
2. File management
3. Device management
4. Information management
5. Communications
6. Protection
What are the six major categories of system calls?
New
Ready
Running
Waiting
Terminated
Different states of a process?
Traditional Computing
Client-Server Computing
Peer-to-Peer Computing
Web-Based Computing
What are different types of computing environments?