Operating System is a moderately hard subject. Most of the theory is logical, but numericals and problem-solving (scheduling, page replacement, disk algorithms) require practice. Understanding concepts is more important than rote memorization.

Chapter Importance & Difficulty:

OS Overview: Less important, easy – short-answer/conceptual questions.
Process Management: Very important, hard – highest marks (scheduling, IPC, classical problems).
Process Deadlocks: Important, medium – mainly theory and small numericals.
Memory Management: Very important, hard – medium-to-high marks (paging, segmentation, TLB, page replacement).
File Management: Less important, easy – short-answer type questions.
Device Management: Important, medium – disk scheduling, DMA, interrupts numericals.
Linux Case Study: Low importance, easy – mostly conceptual/short notes.

Approximate Revision Time:

3–4 days if focusing on numerical practice and key concepts.
7–8 hours for high-weight chapters (Process, Memory),
3–4 hours for medium-weight chapters (Deadlocks, Device Management),
2–3 hours for light chapters (File Management, OS Overview, Linux Case Study).

Operating System Overview

Chapters

Operating System Overview

Process Management

Process Deadlocks

Memory Management

File Management

Device Management

Linux Case Study

Operating System Overview

Process Management

Process Deadlocks

Memory Management

File Management

Device Management

Linux Case Study