After I submitted my resume at the job fair in my University, a HR manager gave me a call after a few days and there was a casual conversation which involved some HR questions( the usual- tell me a time when you handled multiple projects, how will you handle a difficult group member , etc.,) . A few days afterwards I was informed that I had the technical interview next. There were basic questions on Math, C, MATLAB and Signal Processing. Math and C are easy. MATLAB was tricky and you had to have good prior experience with it before you could answer everything with ease. Signal Processing questions were pretty simple too and can be answered with about two hours of preparation.