Was contacted by recruiter for the position with an initial phone call/screening interview. He set up a 1:1 interview with the group manager (again over the phone). That interview was mostly basic, a few technical questions about compiling/assembling/linking code.

A few days later I was contacted by the recruiter for a follow-up personal interview. This was 5 different 1:1 interviews with various managers of the division and group. Each one was mostly basic personality type questions. Final 2 interviews were more technical and conducted by two technical staff members. Both asked questions about my technical experiences. Had to discuss how malloc() and free() work at the OS level.

Describe how malloc() and free() work in the OS.