Cracking a tech interview in 2025 demands not only strong technical knowledge but also clear communication and personal insight. This list includes a balanced set of technical and personal questions that are commonly asked of B.Tech Computer Science students. Each answer is concise and easy to understand, with visuals where helpful.
1. Tell me about yourself.
Answer: Start with your name, degree, university, and a quick overview of your interests, strengths, projects, and career goals.
2. Why did you choose Computer Science?
Answer: Mention your passion for technology, logical thinking, problem-solving, and how CS aligns with your long-term goals.
3. What is the difference between a process and a thread?
Answer:
- Process: Independent execution with its own memory space.
- Thread: Subset of a process sharing memory.
4. What is a deadlock in operating systems?
Answer: A deadlock occurs when processes are waiting on each other indefinitely to release resources.
5. Describe a project you’ve worked on and your role in it.
Answer: Briefly describe a significant project, technologies used, and your contributions and outcomes.
6. What is normalization in databases?
Answer: Normalization is organizing data to reduce redundancy and improve consistency.
7. What are your strengths and weaknesses?
Answer: Pick strengths relevant to the job (e.g., problem-solving). Choose a minor weakness and how you’re working on it.
8. Explain REST vs. SOAP APIs.
Answer:
- REST: HTTP, lightweight, uses JSON.
- SOAP: Protocol with strict standards, uses XML.
9. What is Git and why is it used?
Answer: Git is a distributed version control system for tracking code changes and collaborating in teams.
10. How do you manage time and priorities?
Answer: Mention using tools like Trello/Google Calendar and techniques like prioritization and deadlines.
11. What are data structures?
Answer: Organized formats to store and manage data (e.g., arrays, stacks, queues).
12. What is Big O notation?
Answer: It represents the performance or complexity of an algorithm in terms of input size.
13. Explain OOP concepts.
Answer:
- Encapsulation
- Inheritance
- Polymorphism
- Abstraction
14. What is stack vs heap memory?
Answer:
- Stack: Static memory allocation.
- Heap: Dynamic memory allocation.
15. How do you handle failure?
Answer: Explain how you treat failures as learning opportunities and bounce back stronger.
16. What is MVC architecture?
Answer: A design pattern that separates the app into Model, View, and Controller.
17. What is recursion?
Answer: A method where a function calls itself to solve a problem.
18. Describe a situation where you worked in a team.
Answer: Briefly share a team experience, your role, and how collaboration helped achieve success.
19. What is SQL injection?
Answer: An attack method that manipulates SQL queries through input fields.
20. What is the difference between AI, ML, and Deep Learning?
Solution:
- AI: Broad field aiming to simulate human intelligence.
- ML: Subset of AI that learns from data.
- Deep Learning: Subset of ML using neural networks with many layers.
21. Difference Between Supervised and Unsupervised Learning
Answer: Supervised learning uses labeled data to predict outcomes, while unsupervised finds patterns in unlabeled data.
22.Explain the concept of IP Address
Answer: An IP address (Internet Protocol address) is a unique numerical label assigned to each device connected to a computer network that uses the Internet Protocol for communication.
23. What is responsive web design?
Answer: Designing web apps that adapt to different screen sizes and devices.
24. What is the difference between frontend and backend development?
Answer:
- Frontend: Client-side interface.
- Backend: Server-side logic and database interaction.
25. Where do you see yourself in 5 years?
Answer: Talk about career growth, continuous learning, and contributing to meaningful tech innovations.