There were four rounds. The first two rounds were good, with lots of technical discussion and a system design (working application).

The first two interviewers were really nice. They discussed designs, alternative ways of doing things, and a lot about the internet and protocols.

Then came the third round. It was the most baseless round I have ever faced in my career.

The interviewer was asking random things (which he might have seen on YouTube minutes before the interview) and asking me to guess the answers (and the questions too). It was annoying.

I would suggest watching all the trending YouTube videos before going for the interview, because if you are lucky like me, there will be a round where all the irrelevant questions will be asked.

Round 1: How Torrents Work, Internet Protocols

Round 2: Create a system like Bitly (working RESTful APIs)

Round 3: Guess the questions in my mind and give the same answers that are in my mind.