Individuals from outside of the field of software testing may consider quality assurance, quality control, and software testing to be synonymous. However, as a test engineer, you understand that each of these practices is distinct and has its own set of characteristics. Describing these to the interviewer will demonstrate your qualifications and your experience as a software test engineer. As with any question, keep your answer brief and anticipate a follow-up question if the interviewer needs additional information or wants to explore this topic in more detail.