I applied through a college or university. The process took over a week.

• Round 1: I solved two coding problems conducted via the Guvi platform, which were finding the LCA of an N-ary tree and finding the max depth of an N-ary tree.
• Round 2: It was telephonic. The interviewer asked two basic array questions, the difference between SQL and NoSQL, and questions from projects in my resume.
• Round 3: It was a coding round with a follow-up question. I was given a concept based on tree DS and asked to solve it incrementally.

SQL vs NoSQL. There was one answer.