This page contains Syllabus of Operating Systems of CSIT.

Title Operating Systems
Short Name OS
Course code CSC259
Nature of course Theory + Lab
Semester fourth-semester
Full marks 60 + 20 + 20
Pass marks 24 + 8 + 8
Credit Hrs 3
Elective/Compulsary Compulsary

Course Description

Course Description: This course includes the basic concepts of operating system components. It consists of process management, deadlocks and process synchronization, memory management techniques, File system implementation, and I/O device management principles. It also includes case study on Linux operating system.

Course Objectives

  1.  Describe need and role of operating system.
  2.  Understand OS components such a scheduler, memory manager, file
  3. system handlers and I/O device managers.
  4.  Analyze and criticize techniques used in OS components
  5.  Demonstrate and simulate algorithms used in OS components
  6.  Identify algorithms and techniques used in different components of Linux

Units and Unit Content

1. Operating System Overview
teaching hours: 4 hrs

1.1. Definition, Two views of operating system, Evolution of operating system, Types of OS.

1.2. System Call, Handling System Calls, System Programs, Operating System Structures,

The Shell, Open Source Operating Systems

2. Process Management
teaching hours: 10 hrs

2.1. Process vs Program, Multiprogramming, Process Model, Process States, Process Control


2.2. Threads, Thread vs Process, User and Kernel Space Threads.

2.3. Inter Process Communication, Race Condition, Critical Section

2.4. Implementing Mutual Exclusion: Mutual Exclusion with Busy Waiting (Disabling

Interrupts, Lock Variables, Strict Alteration, Peterson’s Solution, Test and Set Lock),

Sleep and Wakeup, Semaphore, Monitors, Message Passing,

2.5. Classical IPC problems: Producer Consumer, Sleeping Barber, Dining Philosopher


2.6. Process Scheduling: Goals, Batch System Scheduling (First-Come First-Served, Shortest

Job First, Shortest Remaining Time Next), Interactive System Scheduling (Round-Robin

Scheduling, Priority Scheduling, Multiple Queues), Overview of Real Time System


3. Process Deadlocks
teaching hours: 6 hrs

3.1. Introduction, Deadlock Characterization, Preemptable and Non-preemptable Resources,

Resource – Allocation Graph, Conditions for Deadlock

3.2. Handling Deadlocks: Ostrich Algorithm, Deadlock prevention, Deadlock Avoidance,
Deadlock Detection (For Single and Multiple Resource Instances), Recovery From
Deadlock (Through Preemption and Rollback)

4. Memory Management
teaching hours: 8 hrs

4.1. Introduction, Monoprogramming vs. Multi-programming, Modelling Multiprogramming, Multiprogramming with fixed and variable partitions, Relocation and Protection.

4.2. Memory management (Bitmaps & Linked-list), Memory Allocation Strategies

4.3. Virtual memory: Paging, Page Table, Page Table Structure, Handling Page Faults, TLB’s

4.4. Page Replacement Algorithms: FIFO, Second Chance, LRU, Optimal, LFU, Clock, WS- Clock, Concept of Locality of Reference, Belady’s Anomaly

4.5. Segmentation: Need of Segmentation, its Drawbacks, Segmentation with Paging(MULTICS)

5. File Management
teaching hours: 6 hrs

5.1. File Overview: File Naming, File Structure, File Types, File Access, File Attributes, File

Operations, Single Level, two Level and Hierarchical Directory Systems, File System


5.2. Implementing Files: Contiguous allocation, Linked List Allocation, Linked List

Allocation using Table in Memory, Inodes.

5.3. Directory Operations, Path Names, Directory Implementation, Shared Files

5.4. Free Space Management: Bitmaps, Linked List

6. Device Management
teaching hours: 6 hrs

6.1. Classification of IO devices, Controllers, Memory Mapped IO, DMA Operation,


6.2. Goals of IO Software, Handling IO(Programmed IO, Interrupt Driven IO, IO using

DMA), IO Software Layers (Interrupt Handlers, Device Drivers)

6.3. Disk Structure, Disk Scheduling (FCFS, SSTF, SCAN, CSCAN, LOOK, CLOOK), Disk

Formatting (Cylinder Skew, Interleaving, Error handling), RAID

7. Linux Case Study
teaching hours: 5 hrs

7.1 History, Kernel Modules, Process Management, Scheduling, Inter-process

Communication, Memory Management, File System Management Approaches, Device

Management Approaches.

Lab and Practical works

Laboratory Work

The laboratory work includes solving problems in operating system. The lab

work should include;

1 Demonstration of basic Linux Commands

2 Process creation and termination, thread creation and termination

3 Simulation of IPC techniques

4 Simulation process Scheduling algorithms

5 Simulation of deadlock avoidance and deadlock detection algorithms

6 Simulation of page replacement algorithms

7 Simulation of File allocation techniques

8 Simulate free space management techniques

9 Simulation of disk scheduling algorithms