NTT Data Services campus drive was held in my college. Mainly there were 4 rounds of selection process. It came for CSE/IT/ECE Branches (I'm from ECE). The first round was an online test (through AMCAT) which was pretty simple. It consisted of 4 sections mainly English, Quantitative Ability, Logical Ability and Computer Programming. If you have practiced moderate level aptitude questions from any source , and are aware of basic concepts of programming in either C, C++ or JAVA, then it'll be a child's play for you. I could clear it easily. When you clear the first round, the deciding rounds start. The second comes the Group Discussion which was pretty longer in duration (around 1 hour). The interviewee gave us a simple topic and after an hour of long discussion, i cleared it. Third round was the technical round in which the interviewee asked me questions based on my semester projects. Also, he asked me questions related to basic concepts of OOPS. If you have basic knowledge of the contents mentioned in your CV, it'll be again a child's play. I cleared it too. The final round was the HR round in which the interviewee asked me basic HR questions like why IT company as you're an ECE student, what advice will you give to your juniors upon working on a particular project. It was again a simple round and if you are able to make up to this round, it means you're selected. Just be calm and it'll be a cake walk.