CBSE Class 12 Computer Science Last Minute Revision 2026 – Easy Overview to Pass
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CBSE Class 12 Computer Science Last Minute Revision 2026 – Easy Overview to Pass
If your CBSE Class 12 Computer Science board exam 2026 is near and you need quick preparation, this guide is for you. This last minute Computer Science revision article covers:
- Important topics
- Marks distribution
- Python & SQL focus
- Practical exam tips
- Easy study strategy
Even with limited time, you can pass confidently by focusing on the right chapters.
CBSE Class 12 Computer Science Exam Pattern 2026
| Component | Marks |
|---|---|
| Theory Exam | 70 |
| Practical / Internal | 30 |
| Total | 100 |
| Exam Duration | 3 Hours |
Unit-Wise Marks Distribution (Theory)
| Unit | Name | Marks |
|---|---|---|
| I | Computational Thinking & Programming-2 | 40 |
| II | Computer Networks | 10 |
| III | Database Management System (DBMS) | 20 |
| Total | 70 |
Units You MUST Study First (For Easy Passing)
These cover 60+ marks:
-
Python Programming & File Handling (Unit I) – 40 marks
-
SQL & DBMS (Unit III) – 20 marks
Networks is theory based and easy scoring.
Unit-Wise Last Minute Topics to Revise
Unit I – Computational Thinking & Programming-2 (40 Marks)
Python Basics (Quick Revision)
- Variables & data types
- If-else conditions
- Loops (for, while)
- Lists, strings, dictionaries
Important Programming Topics
| Topic | Focus |
|---|---|
| Functions | parameters, return |
| Recursion | factorial, fibonacci |
| Exception handling | try, except, finally |
| File handling | read, write, append |
| File types | text, binary, CSV |
| Stack | push, pop using list |
Tip: Practice at least 5 file handling programs.
Unit II – Computer Networks (10 Marks)
Easy theory scoring unit.
Important Topics
- LAN, MAN, WAN, PAN
- Network devices – router, switch, modem
- IP address, DNS, URL
- Protocols – HTTP, HTTPS, FTP, SMTP
- Cyber safety – malware, phishing, passwords
Unit III – Database Management System (20 Marks)
DBMS Concepts
- Table, record, field
- Primary & foreign key
- Advantages of DBMS
SQL Commands to Revise
| Type | Commands |
|---|---|
| DDL | CREATE, ALTER, DROP |
| DML | INSERT, UPDATE, DELETE |
| Queries | SELECT, WHERE |
| Functions | COUNT, SUM, AVG |
| Clauses | GROUP BY, HAVING |
| Joins | Basic INNER JOIN |
Python + SQL Connectivity
- Connect database
- Execute queries
- Fetch records
Practical Exam (30 Marks) – Easy Scoring
Includes:
| Component |
|---|
| Python program |
| SQL queries |
| Project |
| Practical file |
| Viva |
Tip: Revise file handling + SQL programs.
One-Day Last Minute Study Plan
| Time | Topic |
|---|---|
| 3 hrs | Python programs |
| 2 hrs | File handling |
| 1.5 hrs | SQL |
| 1 hr | Networks |
| 30 min | Revise theory |
Most Important Python Functions to Remember
open()
read()
write()
append()
close()
len()
range()
push()
pop()
How to Score More in CS Exam
- Write full programs
- Use proper indentation
- Mention comments
- Write SQL queries neatly
- Attempt all questions
- Revise syntax carefully
Common Mistakes to Avoid
- Wrong SQL syntax
- Missing colon in Python
- Not closing files
- Forgetting semicolon in SQL
- Skipping theory questions
Click Here to Know More about CBSE Class 12 Computer Science Syllabus 2025-26 | Unit Wise Topics & Exam Pattern Details: https://dekhocampus.com/news/cbse-class-12-computer-science-syllabus-2025-26
FAQs (Frequently Asked Questions)
No, it is the easiest theory unit.
Project marks are included but theory still matters.
At least 10–12 Python programs.
Unit I – Python programming (40 marks).
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