AD405-Operating Systems

Artificial Intelligence and Data Science, IV-Semester

AD405: Operating Systems

UNIT 1 Introduction to Operating Systems: Function, Evolution, Desirable Characteristics and features of an O/S, Operating Systems Services: Types of Services, Different ways of providing these Services – Utility Programs, System Calls.

AIDS_AD-405_Operating Systems_UNIT-1_Notes 

AIDS_AD-405_Operating Systems_Assignment_Unit-1 last date of Submissions 15-05-2025

unit-1-MCQs on AD-405-Operating System

UNIT 1 Introduction to Operating Systems Q/A 

UNIT 2 Process Management: Concept of a process, Process State Diagram, Process based kernel, Dual mode of process execution, CPU scheduling algorithms,  deterministic modeling, and System calls for Process Management, Concept of Threads: User level & Kernel level Threads. Process Management in UNIX & Windows Inter Process Communication: Real and Virtual Concurrency, Mutual Exclusion, Synchronization, Critical Section Problem, Solution to Critical Section Problem : Semaphores and their Operations and their implementation. Deadlocks: Deadlock Problems, Characterization, Prevention, Avoidance, Recovery. IPC in UNIX & Windows

AIDS_AD-405_Operating Systems_UNIT-2_Notes

AIDS_AD-405_Operating Systems_Assignment_Unit-2

UNIT 3 Memory Management: Different Memory Management Techniques – Partitioning, Swapping, Segmentation, Paging, Paged Segmentation, Comparison of these techniques, Techniques for supporting the execution of large programs: Overlay, Dynamic Linking and Loading, Virtual Memory – Concept, Implementation by Demand Paging etc. Memory management in UNIX & Windows

AIDS_AD-405_Operating Systems_UNIT-3_Notes

AIDS_AD-405_Operating Systems_Assignment_Unit-3

UNIT 4 File Systems Management: File Concept, User’s and System Programmer’s view of File System, Disk Organization, Tape Organization, Different Modules of a File System, Disk Space Allocation Methods – Contiguous, Linked, Indexed. Directory Structures, File Protection, System Calls for File Management, Disk Scheduling Algorithms. File Systems in UNIX & Windows.

AIDS_AD-405_Operating Systems_UNIT-4_Notes

AIDS_AD-405_Operating Systems_Assignment_Unit-4

UNIT 5 Input / Output Management : Principles and Programming, Input/output Problems, Different I/O operations: Program Controlled, Interrupt Driven, Concurrent I/O, Asynchronous Operations, Logical structure of I/O function, I/O Buffering, Kernel I/o Subsystem. Introduction to Network, Distributed and Multiprocessor Operating Systems. I/O management in UNIX & Windows

AIDS_AD-405_Operating Systems_UNIT-5_Notes 

AIDS_AD-405_Operating Systems_Assignment_Unit-5 

TEXT BOOKS RECOMMENDED:

1. Silberschatz, Galvin, Gagne, “Operating System Concepts’’, Wiley, 9/E

2. William Stalling, “Operating Systems”, Pearson Education

REFERENCE BOOKS:

1. Andrew S. Tanenbaum, “Modern Operating Systems”, 3/e, Prentice Hall

2. Maurice J. Bach, “ The Design of Unix Operating System”, Prentice Hall of India,

3. Bovet & Cesati, “Understanding the Linux Kernel”, O’Reily, 2/E. 

List of Experiment

1. Write a program to implement FCFS CPU scheduling algorithm.

2. Write a program to implement SJF CPU scheduling algorithm.

3. Write a program to implement Priority CPU Scheduling algorithm.

4. Write a program to implement Round Robin CPU scheduling algorithm.

5. Write a program to compare various CPU Scheduling Algorithms over different Scheduling Criteria.

6. Write a program to implement classical inter process communication problem (producer consumer).

7. Write a C++ program to simulate Bankers Algorithm for Deadlock Avoidance and Prevention  

8. Write a program in C++ to  simulate the Fixed Partitioning Technique( MFT ) with first fit , best fit, next fit, worst fit. 

9. Write a program in C++ to  simulate the Variable Partitioning Technique. 

10. Write a program to implement & Compare various Disk & Drum scheduling Algorithms