Some basic questions/tasks about C programming (pointers, arrays..), design task for receiving data bytes from the transmitter (C programming), Asked to explain different parts of some old SOC configuration. For people studying only Electronics I would suggest going through Software Engineering lectures from other courses to know about how memory is managed in a SOC and CPU. Ideally read about the Architecture of CPU and Microcontrollers as I was asked this in all 3 Interviews with ARM. I only studied Electronics and had no courses related to this except when we briefly looked into simple microcontrollers without going into detail so it was good decision going through Software Engineering course notes before the interview.