They asked questions on DSA. Pretty fundamental.
Some questions on system design as well.
The interviewer was patient and happy to clear doubts. The process is little slow though. Overall good experience.
Interview was not hard, mainly focused on C language concepts.
Also, there was a small part On C++ concepts.
The second part was compromised of more "interview like" questions.
And the interviewer did not care in which language I'd choose to implement it.
Difficult, took all the round on same day in Mumbai dadar office, two rounds of technical and then one director round which half technical and as well as about behavioral questions.