Engaging. The interviewer wanted to learn about your experiences. Being a recent graduate, I was a worry for a bit because I didn't have the knowledge and background of engineering. If they see that you are committed and also willing to learn, there is no way they will turn you away. Talk about your strengths and how it can play into the company. Tell them experiences of times where you used your strengths to understand something that you weren't comfortable in. Overall, be confident.