IBM Software Engineer interview questions

I applied for the general Software Developer Intern position online through their portal. A few weeks later I received the email for the iPAT test which tests your pattern recognition, logic and mathematical skills. It is very difficult, and I suggest you search for practice material as I did. A week later I was contacted by two different managers for two different positions, both part of the Commerce Development team. One was scheduled onsite and the other over the phone. They were very different interview experiences. The phone interviewer asked about polymorphism, Linux commands, past experiences, whether I was familiar with Gradle or Emacs or automation testing. Lasted about 45 mins. The onsite was much more relaxed and almost entirely about my projects and experience for an hour. Felt very comfortable with the manager. I received offers from both managers, one a month later and one a week.