Usually in an oral test situation just answer the question and do not do too much talking because sooner or later he/she will disagree with you. Ex. What is decision speed on a transport category aircraft? Ans. V1 If you start talking about adjustments to V1 for wet runways, inop antiskid, sooner or later there will be a disagreement.
Under the FAA the crosswind is usually defined as Maxium Demostrated Crosswind, it is not a limiting factor. Not sure what the JAA rules are our if the airline has a set wind velocity as a hard rule.
I have hard of an American regional asking bone-headed questions. Something like this - You are flying a Piper Seneca out of a 10,000 foot runway and an engine quits at VMC + 7? Guys says, I would abort. Then they ask how about the engine quits at VMC + 11, VMC + 15?.... It seems like they are asking toss-up questions.