HARMAN Developer interview questions

I was supposed to have two technical rounds. But got eliminated in first round. Was asked five questions in total, answered all five, and according to interviewer 3 were wrong. Went home and did my research in Stackoverflow, geeksforgeeks, wikipedia etc. Only one was wrong, that too partially wrong. All questions were silly, and elementary, and I was shocked that the senior engineer who took my interview was talking so bluntly, without giving any logical reasons to why my answers were wrong. He simply kept on insisting it was wrong.

Recruiter contacted me via LinkedIn Phone interview: Resume review, HR questions Online Coding Test: simple, 3 questions to code in 30min. Phone interview by principal SE: Questions on previous projects, questions on teamwork Onsite: Scheduled, yet to go for onsite interview