Your portfolio may include reference letters, samples of your best writing, and major accomplishments. This is your chance to be enthusiastic about yourself. Listen attentively to questions, and respond directly. Don't ramble on or stray from the crux of the question asked. The questions asked will require you to give examples that demonstrate your past accomplishments.
Behavioral interviewers have an agenda.
They're looking for the person whose answers exemplify the skills required to perform specific tasks. Content Skills, such as writing, accounting, drafting, and computer graphics. Functional Skills, such as managing people, organizing information, administering policy, developing a project, and communicating. Adaptive Skills, such as personal characteristics, attitude, capability as a self-starter, and the ability to work in groups. Questions will come in many forms.