1. I guese , the most appropriate facts to be told at the exam including mostly your personal information. Then if at the party you get the casual concersation, as a rule you may tell the person you are talking with the basic facts of your life, that might be interesing or your opinions about different social issues. While applying for the job you should present a summary your previous job experience, working skills, other qualifications for a job opportunity or social issues you are involved in.
2.I think , that is important to be relevant and to show all of your real opportunites , when you have an interview to get the job. But you can be more or less inventive, in the talks with friends, you can say whatever you want , if it makes you feel more comfortable.
3.i believe, it is easier to talk about your strong points, because you manage to show all your positive sides of your nature. On the other hand, when you are talking about your drawbacks, it is beyond your control to make the right impression.
4. In my opinion , realism makes stories more fascinating and interesting .