This question seeks to find out whether the interviewee has a good grasp of the field and what is involved. Most of the information required to answer this question will be learnt through theory classes. This will show how well the applicant qualified in their theory examinations. In answering such a question, the applicant can define what customer service is and what the staff members in a customer service department do on a daily basis. They should also outline that there are different levels of customer service and briefly state the benefits of good and efficient customer services.