DDG Project Designer/Architect interview questions

I applied for this job online and got a call from their hiring manager in about 20 days and asked me to come in for the interview. There were 2 people who interviewed me together, and the process is straightforward. First I briefly introduced my education and working experiences and background, and they asked me a few questions about my previous work, then they asked me to present my work portfolio, and asked some design related questions to some specific projects I did.