I turned down interviewing with one of this companies because they didn't want to disclose the salary, not even a salary range. Also, the interviewer explained

I turned down interviewing with one of this companies because they didn't want to disclose the salary, not even a salary range. Also, the interviewer explained that I had 3 weeks for studying a list of computer science concepts for the interview. I already have a Master's degree and I am working, I don't need to study to proof my profesionality.