Cadence Design Systems interview questions

Campus based interview and shortlisted resumes first then conducted online interview about 45-60 mins.The panel was very very friendly and helping. Coding will be a plus to this interview. Asked Digital Signal Processing and image processing related questions.

I was interviewed through a referral from an employee . They called for the interview approximately after 1 month . And the interviewer seemed to be a little buzy because throughout the interview , he kept saying you have wasted my time .