There were 4 rounds:

1. Aptitude - There were questions related to C, C++, and data structures.

2. Technical round - There were questions related to my branch, i.e., EC (how wireless transmission happens), database, etc.

3. Second Technical round - C++, database.

4. HR Round - Why do you want to join this company, your hobbies, etc.

5. Managerial round.

They asked me about C++, database questions in the technical round, and the HR round was mostly behavioral questions.