Senior Graphics Designer Question:

An employer might ask this question because, although you might have mentioned it on your CV or included it in your portfolio, they want to hear about your most successful campaign in your own words. With this question, the employer wants to hear about your passion for that particular campaign and why you personally think it was such a success. They're also looking to see how you judge the success of a campaign and how and what you did to make it successful. Obviously with this question, your answer will depend on your previous experience - but whichever campaign you choose, try and have some stats to hand and be careful not to take responsibility for other people's work.