As a rule of thumb, if you feel that the correct answer depends on these details, ask questions to pin it down. Or, even better, just pick what you think is th

As a rule of thumb, if you feel that the correct answer depends on these details, ask questions to pin it down. Or, even better, just pick what you think is the most relevant for the company that you're interviewing at and (briefly) say what you're using as working assumptions.