Apple Mechanical Engineer interview questions

the interview is quite technical, I was asked with lots of questions of the material properties, strength of materials, and some non-technical behavior questions about my resume. Like some accomplishment I had etc.

Some behavior questions, then some simple technical questions. The technical problems are basic, and are all undergraduate level knowledge. I interviewed on campus. They asked some questions about my experience and the process of how to get to the research or project result is important. Other technical problems are mainly about material mechanics: the relation between strain and stress; the calibrate beam.