First interviewer drew his system and asked me how I could solve the design. I knew he was looking if I had worked on the technologies that I had mentioned in my resume. I explained to him. He tried to make the requirements complicated to understand if I could apply my knowledge but at the end he asked me how much salary was I demanding. Second interviewer was a product manager. He just asked me about what I worked on. He too asked me at the end the amount of salary i was demanding. Third HR came in and he asked me again the salary I was demanding. Totally unprofessional