Are you willing to travel ? | Corporate Interview Questions Tips

 You have to be honest while answering this question. There is no point in saying Yes when you prefer to be home every evening. Asking about the amount of travel involved is perfectly legitimate.
This gives you an idea to weigh the idea and make a decision. What's most important is to get a good understanding of what's involved before you are offered the job, rather than being (unpleasantly) surprised after you have already been hired.