Qualcomm Developer interview questions

They will take in details interview total 5 rounds.

The interview took about 40 minutes. It was kind of enjoyable. The hiring manager first asked me about my previous experience and He actually let me talk. He didn't interrupt me with any kind of question. Then he formulated specials scenarios and what would I do in those situations. For example, what could go wrong or why the software could stop working if the system where the software is running is updated to a faster system? Finally he asked me how to multiply two 64bit integers with a 32 bit only microprocessor.