Google Engineer interview questions

I sent my resume into google without reviewing the site or google job requirements. I was called for a 1st level phone screening which was easy. The recruiter was very nice and got back to me quickly and we moved onto the 1st phone screening. I have been non hands on for a few months so the phone screening was a bit more challenging then it should have been. The interviewer wanted in depth answers like how the struct and bits were aligned. Note: review your C and comp sci {algorithms, unix system engineering, etc}. I strongly suggest reviewing 'Design of the Unix Operating System' before going into this interview.