Dell Technologies interview questions

First 3 rounds of the interview went quite well. 1st round Technical with coding test question. 2nd was more of past work experience and bit of technical. 3rd round was a Hiring Manager round with fitment test. Unfortunately, my hiring Manager had to conduct one more technical to reject my profile(my perception may be as 3rd round was the last round I had been told earlier). In this round the interviewer from a different team was asked to take my interview. She started asking me questions on which I have not worked and I had mentioned about it in all the 3 earlier rounds. I felt disheartened because of it and did not wish to proceed on the interview further. The interviewer smiled and closed the call. I understand its the choice of company and hiring manager and my bad I could not succeed.

One round of interview. They were kinda unprofessional and they didn't let me ask any questions in the end. Interview was pretty easy but boring. They are not hiring interns anytime soon (in USA)