Difficult and very hard, I was not able to solve as I used it long ago when I was studying network. Other than that they focus on operating system and database management system

A very engaging and enjoyable process. Instead of a standard OA round, it was a 3-hour hackathon where we had to build a service that would monitor and sync updates between any two directories. We had to do this in 4 stages, and someone would come around to verify the implementation at the end of each of them.