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CBSE Class 12 Computer Science Questions & Answers
Welcome to GKSchools, your trusted educational portal for competitive exam preparation. This page is dedicated to CBSE Class 12 Computer Science, a crucial segment under the CBSE Study Notes syllabus. Understanding CBSE Class 12 Computer Science is essential for students and aspirants aiming to secure high ranks in competitive examinations. In this detailed study guide, we break down the core principles, solve practice questions, and share expert preparation strategies to help you gain mastery over this topic. Why is this topic important? Questions on CBSE Class 12 Computer Science are frequently asked in major exams like SSC CGL, UP Police Constable, Railway (RRB) NTPC, Bank PO, and State PSC Exams. Examiners test your logical understanding, speed, and accuracy in this segment. Scoring well here requires a combination of conceptual clarity and regular mock test practice. On this page, you will find curated study materials, solved examples, and interactive quizzes designed by our editorial board to meet the latest 2026 exam standards. To get the maximum benefit from this guide, we recommend starting with the fundamental concepts, followed by attempting the quiz questions at the bottom of the page. Do not forget to bookmark this resource and check back regularly as we update our daily current affairs and subject notes to reflect the latest notification and syllabus updates. Start your learning journey today and elevate your exam preparation to the next level!
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Q1. What is the difference between RAM and ROM?
RAM is volatile memory used for temporary storage, whereas ROM is non-volatile memory used for permanent instructions required for booting.
Q2. Define Encapsulation.
Encapsulation is the process of wrapping data and functions into a single unit called a class.
Q3. What is a Database?
A database is an organized collection of structured data managed by a DBMS.
Q4. What is DBMS?
DBMS stands for Database Management System, used to store, retrieve, and manage data efficiently.
Q5. What is a Primary Key?
A primary key uniquely identifies each record in a table, and it cannot be NULL.
Q6. Explain the term ‘Inheritance’.
Inheritance allows one class to acquire properties and methods of another class.
Q7. What is Cloud Computing?
Cloud computing refers to delivering computing services over the internet such as storage, servers, and databases.
Q8. What is a Computer Network?
A computer network is a group of interconnected computers that share resources and information.
Q9. What is HTTP?
HTTP stands for HyperText Transfer Protocol, used for transferring web pages over the internet.
Q10. What is a Firewall?
A firewall is a security system that monitors and controls incoming and outgoing network traffic.
Q11. What is a Function in Python?
A function is a block of reusable code that performs a specific task.
Q12. Define Recursion.
Recursion is a method where a function calls itself to solve a problem.
Q13. What is CSV file?
A CSV file (Comma Separated Values) stores data in tabular form using commas as separators.
Q14. What is SQL?
SQL stands for Structured Query Language used for managing databases.
Q15. Write the use of ORDER BY in SQL.
ORDER BY is used to sort the records in ascending or descending order.
Q16. What is Cyber Crime?
Cyber crime refers to illegal activities performed using digital devices and networks.
Q17. What is a Tuple in Python?
A tuple is an immutable ordered collection of elements in Python.
Q18. Explain POP in Python.
pop() removes and returns an element from a list at the specified index.
Q19. What is Artificial Intelligence?
AI is the simulation of human intelligence in machines to perform tasks like learning and decision-making.
Q20. What is Big Data?
Big data refers to extremely large datasets that require advanced tools and technologies to process.