Dell Technologies Software Engineer interview questions

First round was apti round- C, data structure, basic technical questions , aptitude. Technical interview: there were 2 persons, at first tell me about yourself. They saw my resume and asked about projects, project was related to C, so they took into deep and asked more about C. Some questions related to socket as one of my project was on sockets. And again they asked some questions on C. Actuly they were interested in C because companey works on C. After this round one more technical was there for some candidates and some were directly sent for HR.