There are basically 4 rounds, first was the online aptitude round, second was online video round, third was the Case Study round (along with its interview), fourth was the HR type interview. First Round: The first round was the online Aptitude exam, as my post is BTA, mainly the quantitative questions were only asked. Second Round: Once you clear the first round the next round is video interview, in this total 8 questions will pop on the screen one-after-another, you will have have 1 minute to think and 3 minutes to answer that question. It had 4 technical and 4 non-technical questions. This will do the video round. Third Round: Once first 2 rounds are done, shortlisting will be done (no idea on what basis to be honest). Total 30 students were shortlisted for BTA from our college. The third round is Case Study round, which took place at the ZS Associates office. We were given a Case Study which had in all 9 questions(6 Tech, 3non tech). Basically they want to test your Database related Knowledge in this round for BTA. 30 minutes were given to study the given case study. After that interviews began. In this round the interviewer asked all the 9 questions given in the Case Study, also he framed his own question about the database tables given in case study, for example: Find Anomalies in tables. Also questions on guesstimates were asked. Fourth Round: If the third round is cleared the HR and Managerial type interview is conducted. I think they want to check whether the candidate is suitable for their office culture. This round is usually conducted by high post manager in most of the cases. *All rounds are elimination rounds. **Communication skills are very important during interviews(Be Confident). ***Travel from College-to-College, Breakfast, Lunch was provided by ZS Associated (Probably the only company that takes so much care even of the interview candidates which is a real positive of the company) Study SQL and DBMS from geeks-for-geeks. Study Guesstimates and Puzzles Prepare well!!! Best of luck! Hope to see you in ZS one Day! THANK YOU!

Lengthy and time consuming but process is very good nothing casual and systematic I cleared 3 rounds and in the last round I didn't get positive feedback. So process was nice but we can't say how they judge you even in the last round and reject you.