Its the usual competemcy questions. Im not a pro but just be urself. They really want to know more about you thru these questions. How u handle urself in different circumstances and ur approach to life n problem solving etc. There r no right or wrong answers (well, maybe there r obvious wrong answers) but just be confident n honest. Make eye contact, sit up straight, dont slouch, umm.........yeah, pray before u go in and let God take control of the rest. Hope this helps.
What position are you goin in for and is it a trainee or experienced one?