2nd interview is with the director, that one more technical edi. asking u which dept u wanna join, why u choose that field? and of cause some questoins pertaining to the field you chose lor.

yes u may but frankly, i feel you should so some homework, and ask urself really, what do u really want and what's your interest really. otherwise, it'd be bloody tough for the HR to decide whether where to allocate you. and no offence, if you're being so indecisive, the HR ppl may thk u're not sincere and interested, really.

if you're going for the interview as for experience purpose only, then so be it, it's good experience no doubt for your future interviews too.