Applied through a reference at QCT. The first round was a phone interview, which was mostly C with a couple of OS-related questions. I was called for an on-site interview. Approximately 40 candidates interviewed that day. It consisted of four rounds.

One engineer asked questions based on my projects. The second engineer asked me questions based on microprocessor architecture. The other two engineers asked me to write programs on a whiteboard based on linked lists. I was able to answer most of them.

I received an offer after a week. They were responsive in emails. Interview arrangements, such as flights, hotels, and cars, were smooth. The team looked promising since they were working on new LTE technology. Most of the other interview candidates seemed fresh out of college.

Explain how an interrupt works inside a microprocessor.

Questions related to the Program Counter, registers, the stack, and timing.