Mentir peut entrainer une interdiction de sejour. Il faut dire la verite, rien que la verite (mais pas forcement toute la verite). Pas besoin de donner des infos volontairement, particulierement si elles pourraient te nuire.
Je pense que les regles suivantes sont bonnes a suivre (postees par Mr.F, un avocat d'immigration, sur un autre forum):
"Every interview is different. It is normal to be nervous -- the examiners see nervous people all the time, so there is nothing wrong about that.
I give my clients three ironclad rules to follow -- this makes your job easier, the examiner's job easier, and protects you from potentially from doing harm to yourself.
1. Tell the truth, its easier to remember. Ancillary: Don't guess. "I don't know" or "I don't remember" are fine if they are the truth.
2. Understand the question being asked. If you don't understand, then you are guessing and violating rule #1. It is OK to say "I don't understand" "What?" "Can you repeat that" or even "huh??". The question will be rephrased.
3. Answer ONLY the question asked and nothing more. This rule is the hardest one to follow. You don't have to explain your answers unless asked. Example: Q: "Do you know what time it is?" The only correct answers are either "yes" or "no" -- if you say "8:30", you've given more than asked for [I know that the question actually is a polite way of asking "what time is it?", but I'm using it to make a point].
Don't try to get into the DAO's head or figure out WHY she is asking a particular question -- you don't have the time or training for that. Just follow the above three rules."