Here are some example questions to help you understand what an employer is looking for, and why they are asking these questions
Remember that if they are an equal opportunities employer, they will probably score each of your answers in a similar way to your application form. Therefore you want to:
give as full an answer as possible
provide detail and clear examples
don't waffle or list multiple examples
If in doubt, ask the interviewer to repeat all or part of the question or ask if they would like you to give any more detail or a further example.