American Express Software Engineer I interview questions

American Express on-Campus took written round first which consisted of two sections namely quantitative and dbms(sql query) plus some subjective ques based on business situations. Quant was very easy to solve and sql query was little complex.In Interview round,interviewer asked non-tech questions like from current affairs and some general questions like how does google searches query and how does our pc searches any file.He also asked about difference between linux and windows and to explain one project that i mentioned on my resume.