STMicroelectronics Design Engineer interview questions

I was college recruited. The process contains 50 question written exam followed by technical and HR interview. After I cleared the written exam , with good score, in techincal interview I told them clearly that I am not very much comfortable in analog domain. They usually asked me the question which went wrong in written paper. The question were mostly related to RC circuits, VLSI digital design and few control system . the question were mostly to test your basic understanding of deisgn. I believe good MOS understanding should be there.