Admin

03-22-2026, 06:49 AM #1

REST API questions are commonly asked in backend and full-stack developer interviews. Here are the top 10 questions you should prepare:

1. What is REST and what are its key principles?
2. What is the difference between REST and SOAP?
3. Explain the different HTTP methods - GET, POST, PUT, PATCH, DELETE
4. What are HTTP status codes? Explain 200, 201, 400, 401, 403, 404, 500
5. What is the difference between PUT and PATCH?
6. How do you handle authentication in REST APIs?
7. What are idempotent methods and why do they matter?
8. Explain CORS and how to handle it
9. What is API versioning and what are the different strategies?
10. How do you handle pagination in REST APIs?

Key concepts to remember:
- REST stands for Representational State Transfer
- Statelessness is a core principle
- Use proper HTTP methods for CRUD operations
- Always return appropriate status codes
- Implement proper error handling with meaningful messages

Practice building a simple CRUD API using Node.js or Spring Boot before your interview.

indian

03-22-2026, 06:55 AM #2

REST API concepts are heavily tested in backend interviews. Knowing HTTP methods, status codes, and authentication patterns is critical. Great resource for full-stack developers!

mohan

03-22-2026, 07:00 AM #3

REST API knowledge is essential for any backend role! I'd suggest building a small REST API project using Node.js or Python Flask to get hands-on experience. Understanding HTTP status codes and the difference between PUT and PATCH are the most commonly asked questions. Also learn about rate limiting and API security best practices. Practical experience makes answering these questions much easier!