for any interview, i believe the main thing is to focus on the essential...
you must know your stuff well...
good attitude and appearance...
must show confident and composure in answering question...
give short and concise answer... elaborate if ask for or if there is a purpose to it...
if you dont know the answer, just say so...
if not clear, ask for clarification...
lying or giving 'hot air' answer might hit you big time, better avoid it...
arguing is ok to a certain extend but not all interviewer would like it... remember that everybody got ego, that include the interviewer...
interview is just like selling a thing... in this case it is yourself...
emphasize on the good thing / strong point about yourself at every opportunity... for example, if ask about your hobby... then choose and elaborate on hobby that suit the work you are aiming for...
other than that...
do not wisper... make sure people can hear you...
maintain eye contact...
avoid annoying habits like tapping fingers, twisting pens, playing with hairs, etc...
some postures are a big no no... like leaning too much or folding arms...
all these would help in an interview...