I saw a LinkedIn post from one of the recruiters from Postman, and then I applied by sending my resume to the mentioned email.

After a couple of days, the recruiter reached out to me by phone to discuss my experience, educational background, role in my current company, etc.

Then, they scheduled the first technical interview.

1. Technologies I've worked on

2. Detailed discussion on projects

3. What is indexing in databases?

   • Types of indexing: primary, secondary, clustering
   • What is the disadvantage of multicolumn indexing?

4. What is a Garbage Collector and its types?

   • Types: user-defined (external), built-in

5. What are the disadvantages of an external garbage collector?

6. Is Node.js single-threaded or multi-threaded?

7. What is an event loop?

8. Language vs. framework? What is the disadvantage of a framework?

9. HTTP vs. HTTPS

10. Why is there a TCP 3-way handshake?

11. SSL/TLS

    • Which crypto algorithms does SSL use?
    • How do public keys and private keys work?

12. What is a reverse proxy?

13. Reverse proxy vs. load balancer

14. How does a reverse proxy use encryption?

15. Are there any other protocols besides TCP? Have you used WebSockets?

16. DNS Resolution: What happens when you type a URL in your web browser?

17. Multithreading vs. Multiprocessing

18. Advantages of Redis (Distributed Caching)