IBM

One-hour interview. Tell us about yourself, technical questions, and project-based questions. Aptitude problems need to be completed in forty minutes. Programming puzzles need to be solved again in 40 minutes.

The interview process has one HR phone interview and three technical phone interviews. The HR interview had questions about teamwork, etc. It was pretty easy. The technical interviews went through my experience in analytics and included a few quest

Core Java & OOP What are the four pillars of Object-Oriented Programming? Can you explain each with examples? Difference between an abstract class and an interface? When do you use which one? What is polymorphism? Explain compile-time vs run-time