IBM Intern interview questions

IBM came to our college to hire for intern cum placement.It was a 2-day process. On the first day, we had an online test which was held on their platform which consists of 18 number series questions which were of moderate difficulty and 18 quantitative questions which were of average difficulty. After that, the shortlist were announced and we had Technical and HR interviews the other day. There were 2 technical interviews both had a panel of 2.In both the interviews they asked about the basic concepts of OOPS, Java, OS, DBMS.Some simple questions on these topics along with some simple code which we had to write and explain step by step.He asked about packages and API's in Java, some simple queries of DBMS.They also asked some logical questions, scenario-based questions, and puzzles. The main focus was on your Projects, they ask everything about the projects that I have done.Both the interviews lasted around 1hr each. Then we had HR interview which was just formalities and had classic HR questions.