Siemens Java Lead interview questions

First of all there was no information on what the roles & responsibilities were.After arriving we get to know its for Java Architect. It seemed more like a walk in. This was conducted on Jan 21 2017. Next The interview:- I could not qualify & was rejected so it was all good, until then when I realised what interviewer wanted to hear .I initially considered myself to have prepared more but seems like the interviewer himself wasn't sure what the answer is. After all correct answers with better than average design on code writing questions he asked me to leave. I tried to asked what exactly are they looking for when answering the question for more understanding of the question. He himself looked quite an experienced person but was always prejudged in all questions.