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Guidance to Score Well in Computer Science Class 12 Session 2024-25

Get an in-depth Strategy to Score High in Computer Science in Class 12

Guidance to score well in Computer Science

Computer as a subject holds immense importance for students. Computer science can be considered a subject of practice. If you perform well in the class 12 board computer science exam, your career will grow. Here’s Ashish Sharma, senior faculty, computer science, Allen career institute, enlightening on scoring maximum marks in class 12 computer science and informatics practices.

Sample Paper Helps in Understanding the Basics

The class 12 students should practice many questions related to computer science. Solving the previous years’ papers and new sample papers will help students understand the basics and get an idea of the questions they can face in the exam. The students should focus on practicing output-related questions from sample papers to gain confidence and crack the class 12 Board exam of computer science.


Important Topics

The students aiming to score high marks in the class 12 computer science exam are advised to focus mainly on Revision of the basics of Python covered in Class XI, Functions, File handling, Text File, Binary file, CSV Files, Using Python Libraries, Data structure, Computer Networks, Database Management, Structure Query Language, and Interface of Python with SQL database concepts.

Time Management is Key to Success

The class 12 computer science exam is relatively shorter compared to other subjects. Students need to manage their time well in the examination hall to finish the paper on time without leaving any questions unattended. The students can score well in class 12 computer science exams by learning time management techniques.

Error Finding Questions

It has been observed that many students make mistakes in the class 12 computer science exams when they get to face error-finding questions in the paper. The students can become a problem in solving error-finding questions if they focus on solving previous and latest sample papers a lot. The students should practice these questions as much as possible so that they do not get any surprises in the examination hall while attempting the class 12 computer science exam.

ALLEN DLP JEE Main + Advanced 2023-24

Know the CBSE Class 12th Computer Science Pattern, Latest Updated Syllabus & Marking Scheme

A student must go through the CBSE class 12th syllabus for computer science before starting to study for the exam. The CBSE New Syllabus (Session-2024-25) syllabus would also tell you the topics with a higher weightage of marks, which cannot be skipped or avoided. It would also help the students form a proper study plan for the exam. The New Syllabus have three units.

Unit No Unit Name Theory Marks
1. Computational Thinking and Programming-2 40 Marks
2. Computer Networks 10 Marks
3. Database Management 20 Marks
Total Marks 70 Marks
Theory 70 Marks
Practical 30 Marks
Total 100 Marks


Paper Pattern in Session 2024 – 2025


Timings: 3 Hours – Max Marks: 70



(Computational Thinking and Programming-2)

Revision of the Basics of Python
1. Python Basics
(Python programming Basics & its features, tokens, datatypes, operators)
2. Conditional and Iterative statements
(if, if-else, if-elif-else, nested if, range function, while, break, continue)
3. Concept of Debugging and Python’s Modules
(syntax errors, logical errors, runtime errors, modules, import and from statements, math module, random module, statistics module)
4. List, Tuples and Dictionary
(List, Tuple and Dictionary data types and operations performed on these data types)
5. Strings
(string operations: concatenation, repetition, membership, slicing, traversing, built-in-functions)
(Built-in-functions ,user-defined functions ),
scope of variables(global scope and local scope)
Exception Handling
Introduction, handling exceptions using try-except-finally blocks.
File Handling
Introduction to files, types of files (Text file, Binary file, CSV file), relative path, and absolute path.
Data Structure
Stack, operations on the stack (push and pop), implementation of stack using list.


 (Computer Networks)

1. Evolution of Networking (ARPANET, NSFNET, INTERNET)
2. Data Communication Terminologies
Concept of communication, components of data communication
(sender, receiver, message, communication media, protocols ) measuring capacity of communication media
(bandwidth, data transfer rate), IP address, switching Techniques (circuit switching, packet switching)
3. Transmission Media
wired communication media (twisted pair, coaxial cable, fiber-optic cable)
wireless media (Radio waves, microwaves, infrared waves)
4. Network Devices
( Modem, Ethernet card, RJ45, Repeater, Hub, Switch, Router, Gateway, WIFIcard )
5. Network Topologies and Types
Types of networks (PAN, LAN, MAN, WAN), Networking topologies (Bus, Star, Tree)
6. Network Protocol
7. Mobile telecom
(WWW, HTML, XML, Domain names, URL, website, web browser, web servers, web hosting)
8. Mobile Telecommunication Technologies
1G, 2G, 3G, 4G & 5G; Mobile processors; Electronic mails protocols such as SMTP, POP3, protocols for Chat and Video Conferencing; VoIP, Wireless technologies sich as WI-Fi and WiMax.
9. Network Security Concepts
Threats and prevention from Viruses, Worms, Trojan horse, Spams Use of Cookies, Protections using Firewalls, https: India IT Act, Cyber Law, Cyber Crimes, IPR issues, hacking.
10. Introduction To Web Services
WWW, Hyper test markup Language (HTML), Extensible Markup Language (XML); Hyper Test Transfer Protocoal (HTTP); Domain Names; URL; Website, Web Browser, Web Services: Web Hosting.


(Database Management)

1. Database Concepts
(Introduction to database concepts and its need)
2. Relational Data Model
(domain, relation, tuple, attribute, degree, cardinality,
keys: primary key, candidate key, alternate key, and Foreign key.
3. Structured Query Language
(concepts of SQL, DDL, and DML commands, Data types,
, Joins: Equi join & natural join)
4. Aggregate Functions
MAX(), MIN(), AVG(), SUM(), COUNT()
5. Interface of Python with an SQL Database
(connecting SQL with Python,creating database connectivity, insert, update and delete statements, fetch one(), fetchall(), row count functions to data.)


Total Number of Questions = 35

Sections No. of Questions Word Limit
Section – A Consists of 18 QUES.(1-18).
Each question carries 1 marks
As per requirement
Section – B Consists of 7 QUES.(19-25).
Each question carries 2 marks
As per requirement
Section – C Consists of 5 QUES.(26-30).
Each question carries 3 marks
As per requirement
Section – D Consists of 3 QUES.(31-33).
Each question carries 5 marks
As per requirement
Section – E Consists of 2 QUES.(34-35).
Each question carries 4 marks
As per requirement


Note: Internal choices have been given for Question Numbers 20,24,25,27,30,33,33,34


3min. Per Question 1 Marks As Per Requirement 3 Min. x 18Q = 54 Min
5min. Per Question 2 Marks As Per Requirement 5 Min. x 7Q = 35 Min
6min. Per Question 3 Marks As Per Requirement 6 Min. x 5Q = 30 Min
8min. Per Question 4 Marks As Per Requirement 8 Min. x 2Q = 16 Min
15min. Per Question 5 Marks As Per Requirement 15 Min. x 3Q = 45 Min


S.No Types of Questions
1 True or False
2 Multiple Choice Questions (MCQ)
3 Fill in the Blanks
4 Assertion and Reason
5 Difference/ Comparison between two entities
6 Program Output 
7 Full Forms
8 Program with the help of Function
9 SQL queries
10 Case Based study


Exam Pattern and Typology of Questions

The exam will be conducted on an Annual pattern not termwise. Once the student knows about the syllabus, they also get an idea about the CBSE class 12 exam pattern, marking scheme, and type of questions being asked year around. Knowing it helps to prioritize chapters during the CBSE class 12 preparation for computer science. Check some important points related to the exam pattern and marking scheme before moving ahead. Below are some quick CBSE class 12 preparation tips for computer science paper

Students Should Solve All the Questions in the Given Time

  • There will be no deduction of marks for providing an incorrect answer; hence students should try to attempt all questions.
  • Highlight the crucial sections either by underlining or using a different color pen other than red.


Follow the Right Book and Study Material for CBSE Class 12 Computer Science

A student must follow the NCERT books for class 12 computer science as prescribed by CBSE. These books cover the complete CBSE 12th computer science syllabus. In addition, students can also follow some good reference books for CBSE class 12th computer science and good study material and video lectures from reputed institutes like Allen career institute.

Make CBSE Class 12 Study Schedule for Computer Science

After collecting all the details of exam patterns, syllabus, and mark distribution, students have to divide their daily schedule in such a manner that they cover all the topics. Students should strictly follow their study schedule to cover the complete syllabus on time. Hence, make a daily study schedule where you devote equal time to all five subjects. Additionally, give more time to tough topics and prepare them on a priority basis as they consume more time than other topics.

Create Short Notes or Flashcards

Along with preparing a topic, students are advised to make hand-written short notes or flashcards of essential facts. Writing these notes helps students to memorize the concept faster. Besides, these quick notes make the revision process easier as students do not need to carry heavy books. Make a problem/doubt copy in which you write the chapter-wise problems/doubts with solutions, it will help you in smart revision.

Revise Important Facts Regularly

The human brain is very complex. It tends to forget things on day by day. Hence, students should put extra effort into keeping the facts and figures remembered during the examination. The students should keep practicing programming and coding regularly to get the hang of it. Short notes will help make your revision process faster. With the help of the same, students can revise the vital section on the go.

Solve CBSE 12th Computer Science Question Papers

Practicing the previous year’s CBSE 12th question papers is a must to score good marks in computer science exams. Moreover, you get to know about the question trend. Solving a minimum of 5-6 questions of each type from the previous CBSE 12th board paper helps clear all doubts. Students can take the help of their teachers to clear the concepts.

Stay Healthy, Stay Focused

Last but not least, maintain a healthy diet throughout the preparation period to stay healthy. Only a healthy person remains active and focused. Hence, one must avoid junk food and sleep properly to avoid stress. This also increases the focus or concentration of the students during the preparation time.

CBSE Class 12th Tips & Tricks for Board Exam Day

  • A student must utilize the initial 15 minutes for reading the question paper.
  • They must analyze all the answers they are confident about and must start with them.
  • Try to write in bullet points and highlight the crucial points.
  • Make a rough sketch for the programs first to avoid making mistakes while writing the final program.
  • Always keep the last 15 minutes for revision and rectifying any mistakes.
  • Do not stick to any question for too long if you don’t know the answer.
  • Be specific and neat in your answers.
  • The key to a successful computer science exam is understanding. As most of the question paper is based on programming, the only way to score is by having a thorough knowledge of programming.
  • Please create your notes for the essential terms and concepts after understanding them. The given notes in a book would be suitable for learning, but for revision, your messages will provide you with the exact information you need.
  • Clear any doubts you have as soon as you can. Use your class 11th computer science books or reference books to clear your doubts, but the best solution would be to ask a teacher.
  • Practice all the exercises and questions available in your textbook.
  • Remember to study definitions and their basic applications thoroughly; questions often arise asking for explanations of topics.
  • Create flowcharts to help you understand and remember programming.
  • When you practice writing programs, try to maintain the required spacing, even if you answer only in rough. Getting into the habit of writing according to the proper spacing will help you.
  • If you have time, use different colored pens/pencils for other areas to help you visually remember them.
  • Pay attention during practical classes; this will help you score high in the applicable marks section worth 30 marks and help clear your doubts.
  • Revise by practicing programming on a computer; you will immediately find out where you stand regarding how many programs you can successfully write/run.
  • Pay attention to details; a single misplaced punctuation mark can ruin an entire answer.
  • Practice sample papers/previous year papers to understand the pattern, test your preparation, and identify your weak areas.
  • Remember always to correct the articles you attempt so you can find and improve your weak areas.
  • No matter, if you choose to become a computer programmer or a doctor, basic knowledge of computer science, Will always be an added advantage. Use logic and understanding, and your class 12th computer science exam will be over before you know it.

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