Technical Interview Questions

Questions asked in Mainframe interviews for a mid level experienced candidate-

1. What is checkpoint restart logic and how will you code it in your program?
2. What is file parallel processing in Cobol programs?
3. What is commit logic ...

I was wondering what are some good questions to ask the interviewer at the end of the interview? They always end up with -"Do you have some questions for me?". To which I often ask the following -

1. What is your responsibility and day ...

I am planning to give interview for 3+ years experience. Please write interview question which you have asked in past.java +springboot etc