Microsoft Intern interview questions

Referred by a friend. Then received an phone interview invitation from an engineer. The interview was fine. Coding problems like two-sum, possible paths from top-left corner to bottom-right corner, etc. Some basic machine learning questions.

Received an offered to my linkedin account. Organization of the phone interview was good. They called in time that I mentioned as the most convenient for me. The interview itself wasn't good. I've been interviewed by not experienced interviewer. He was asking questions like reading them from the paper and randomly, without taking into account my remarks about my strong sides and the things i don't know. Many questions related to concurrency and multithreading. In general everything related to Core Java. One question for logic: you have 9 the same balls, and only one slightly heavier, and scales that you can use only twice. Find the ball, which is slightly heavier. It was easy. Questions about the CV. What challenges did i have previously and how did i resolve it and something similar. Since I haven't received any response for more than 2 months after the interview, it's obvious that i'm not accepted. Well, i think it's not professional, bcs candidates might wait for any answer, even without explanation in order to deal with other offers.