CBSE Class 12 Computer Science Board Exam Preparation
Python, data structures, networks, and SQL — the most scoring board subject for tech students
Complete chapter-wise preparation guide for CBSE Class 12 Computer Science board exam 2025-26. Covers Python file handling, stacks & queues, computer networks, and database management with SQL — marks distribution, important programs, and strategy.
Practice with AI Evaluation →70
Theory Marks
30
Practical Marks
3 hours
Exam Duration
8
Total Chapters
Chapter-Wise Marks Breakdown
70 theory marks| Chapter | Marks | Difficulty |
|---|---|---|
| Python Revision Tour | 5 | Easy |
| Exception Handling | 7 | Medium |
| File Handling | 12 | Medium |
| Data Structures: Stack | 8 | Hard |
| Data Structures: Queue | 8 | Hard |
| Computer Networks | 15 | Medium |
| Database Concepts & SQL | 10 | Medium |
| MySQL-Python Connectivity | 5 | Easy |
Topics That Appear Every Year
Study Strategy for 90+
Programming (Chapters 1–5) carries 40 marks — code every program by hand at least 3 times
File handling is the highest-weight chapter — practice all 3 types (text, binary, CSV) daily
Networks (15 marks) is 100% theory — make a one-page summary of all protocols, devices, and port numbers
SQL carries 10 marks and is fully predictable — master SELECT queries with all clauses
Practical carries 30 marks — write clean, commented programs and learn all mysql-connector methods
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ClearSteps gives you CBSE Class 12 Computer Science mock papers, concept videos for every chapter, and AI evaluation against the real CBSE marking scheme.