IBM Research Intern interview questions

I applied via linkedin without referral, some days after i got an email from HR that my interview is scheduled for Research intern. I attend the interview but unfortunately it was not my time, there were 3-4 interviewer panel and they ask question outside my domain.

The interviewer started by asking me some questions around my resume and projects that I have done, as I was applying for a Research role the focus was more on theory part: how, why, what etc. she even gave me a coding question at the last. (around neural networks)