Once your application shortlisted by IIITD, then there are 3 or 4 further rounds for selecting a right candidate. Students have to compete in CodeChef before coming for an interview. Hence it is good to start taking participation in CodeChef Long Challenges now-onwards. You have to take all your correct submissions at the time of interview as there is a separate interview round for this. CodeChef submission interview round is taken by senior MTech students, and this round is just to know about your approach to solve problems(keep in mind interviewer already taken participation in that contest. Hence they knows problem approach don't try to fool them).
Rounds
1. Aptitude Round is the first elimination round; there is no threshold that if you secure X marks out of Y marks, you qualified this round. It is an elimination round you have to be in top 200 out of 240(according to stats of 2017) if you are CSE student and top 140 out of 180 if ECE.
2. CodeChef Submissions interview is neither elimination nor a selection round, but it is an essential and mandatory round, it is just a round to measure your problem-solving skills. Interviewers will ask your solving approach for a particular challenge, and they may ask you small problem whose approach or solution you have to give at that time.
3. Interview Round: It is a selection round. In this round, the interviewer may ask your favorite 2/3 subjects(be careful, you are going to be interviewed possibly on these subjects only). They may ask questions related to problem-solving skills(like puzzles) or programming language based on reviews given by the previous round Interviewer. In my case, they asked questions related to Java (such as Can we overload main?, Exception handling, final keyword, etc.), algorithm and data structure. One of my friend interviews is completely based on fundamental concepts of Operating System and C++. Be prepared for the following subjects for the interview as it might be possible they will not ask for your favorite subjects and even if ask they don't ask questions from those subjects. If you are experienced, then they will ask the question related to your industrial projects and current workings.
Subjects to be prepared: Operating System(basics), Computer Architecture(basics), Computer Network(basics), one Programming language(conceptually strong), Data Structure and Algorithms(Strong).
Note: If you have little bit knowledge of machine learning then mention that in the interview, it will boost your chances to be converted.
Thanks for sharing your experience. How many finally got selected in cse?
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