First Solar Developer IT interview questions

There were 5 rounds taken place in one day over a span of 5 hours. in each round there was only one person interviewing me. all the 5 rounds were as below. they have a set of questions each around 1.what were you doing in your past job your strengths and weakness in this 2.what were the difficult situations your strengths and weaknesses 3. Customer relationships your strengths and weaknesses 4. what would your old manager say about your strengths, weaknesses 5. some technical questions around by area of subject