"When you interview with an ad agency or other business for a copywriting position, the interviewer will ask questions that will determine whether you have the writing skills and advertising knowledge to write material that will help the the agency's clients sell their products. Prepare to present samples of your work and describe the techniques you used to make your material appeal to its target audience. You may be asked situational questions such as how you would use different forms of media to increase the appeal of a product to a range of consumers."
The most difficult questions had to do with my personality, but I am glad that he asked. He wanted honest answers about things that bother me, which just tells me that he wanted the right person for his team and not just for the job.