Sun Life Senior Mainframe Analyst interview questions

Interview consists of 4 rounds in total. 1st round was a written round with questions from aptitude and technical domain (very Basic). It was followed by a technical interview. In technical interview they mostly asked support related questions. Third was a managerial round, it was a bit tough and tricky. They asked why do I want to work in support as I was working for a development project before. fourth round was the HR one , it was mainly for salary negotiation.