Cracking the Technical Interview: Common Questions and Answers for Freshers in Computer Science


May 17, 2023
Cracking the Technical Interview: Common Questions

Technical interviews are a critical component of the hiring process in the tech industry. During technical interviews, hiring managers and recruiters test the candidate's technical skills and problem-solving abilities. Technical interviews assess a candidate's ability to think critically, analyze problems, and find solutions in a timely manner.

Importance of Technical Interviews

Technical interviews are essential for both employers and job seekers. For employers, technical interviews help evaluate a candidate's technical skills and abilities. For job seekers, technical interviews provide an opportunity to demonstrate their skills and stand out among other applicants.

Technical Interview Process

The technical interview process varies from company to company. However, most technical interviews follow a similar format. The technical interview process typically includes a phone screen, a technical challenge or coding test, and an in-person interview.

During the phone screen, a recruiter or hiring manager will typically ask the candidate some basic questions about their technical background and experience. The technical challenge or coding test usually consists of a problem-solving exercise that requires the candidate to write code. The in-person interview typically consists of a series of technical questions, behavioral questions, and sometimes system design questions.

Common Technical Interview Questions and Answers

Data Structures and Algorithms

1. What is a linked list, and how does it work?

2. What is the difference between an array and a linked list?

3. What is a binary search tree?

4. What is the time complexity of binary search?

Programming Languages

1. What is object-oriented programming (OOP)?

2. What is polymorphism?

3. What is inheritance?

4. What is the difference between abstract classes and interfaces?

System Design

1. How would you design a chat application?

2. How would you design a file storage system?

3. How would you design a recommendation system?

4. How would you design a social network?

Behavioral Questions

1. Can you describe a time when you worked on a challenging project and how you overcame obstacles?

2. Can you describe a time when you had to work with a difficult team member?

3. Can you describe a time when you had to make a difficult decision?

4. Can you describe a time when you had to learn a new technology quickly?


In conclusion, technical interviews are an essential aspect of the hiring process for freshers in computer science. It is essential to prepare well for technical interviews to stand out among other candidates. By understanding common technical interview questions and their answers, you can improve your chances of acing your next technical interview.

FAQs (Frequently Asked Questions)

Q: How should I prepare for a technical interview?

A: To prepare for a technical interview, review common technical interview questions, practice coding problems, and study data structures and algorithms.

Q: What are the most important skills for a fresher in computer science to have?

A: The most important skill for a fresher in computer science is to have coding skills.

Q: How should I answer technical interview questions?

A: When answering technical interview questions, be clear and concise in your explanations, and demonstrate your problem-solving abilities.

Q: How long do technical interviews typically last?

A: Technical interviews can last anywhere from 30 minutes to several hours, depending on the company and the position.

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