Physical Product Designer Question:

Everyone has a different design process (and that’s okay). What will matter is your ability to describe your process and explain the rationale behind your approach. It’s a good idea to have a standard ‘go-to’ process in mind, yet it’s important to acknowledge your design context. Different UX situations inevitably call for different UX processes. It’s a strength to understand your environment and determine a process that’s best fits for your situation.
Ask your interviewer for specifics. Respond to a particular design problem the company is facing or talk about a process you have used in a particular situation.
Through all my processes, my one constant is to ask the right questions before designing. It frames the way I approach a problem and guides me toward the appropriate UX strategy and tools going forward.