IBM Intern interview questions

Basic undergrad level computer science. Data structures and Algorithm. There were subject specific questions. I applied for formal verification domain. So, there were questions on model checking. The interviewers were friendly. They give you a broad picture of what to expect during the interview process. The hiring manager called me and he also asked questions on various topics. The overall internship was organised very well. The total duration of my stay was 4 months. I strongly recommend to apply to IBM Research lab. We filed a patent and submitted a research paper out of the internship work.