IBM Compiler Optimization interview questions

I was invited to an IBM online test one month after submitting resume. Got contacted by the interviewer one month after for an one-hour 1st round phone interview. Questions were mostly technical, during which I was asked to explain a list of software terms, as well as writing code for three problems through GoogleDoc. A 2nd round phone interivew was scheduled a week after. It lasts around 30-min and I was asked to write code for only one problem. After completion the code, the interviewer seems satisfied and asked me if I have any other questions.