This question is like a loaded gun, tricky and dangerous if you're not sure what you are doing. It's not uncommon for people to end up talking salary before really selling their skills, but knowledge is power as this is a negotiation after all. Again, this is an area where doing your research will be helpful as you will have an understanding of average salary.

One approach is asking the interviewer about the salary range, but to avoid the question entirely, you can respond that money isn't a key factor and you're goal is to advance in your career. However, if you have a minimum figure in mind and you believe you're able to get it, you may find it worth trying.