Directi Operational Engineer interview questions

First round is technical aptitude which covers basic questions on operating system ,data structure and mainly networking.There are 20 questions in test and time given was 30 minutes. After that coding round is conducted which contain problem statement based on operating system. It goes for 2 hours and 30 minutes. After that they take as much as technical and HR they want. They had taken 3 to 4 rounds . Some rounds are one to one with different persons .And some times 2-3 interviewer and one candidate like that. Interview is focused on all networking concepts from basic to advance.