☛ I don't disagree with using this type of question as backhanded as it is. Quite honestly there's plenty of miss-perceptions out there. Because you have a degree, because you listed this on your resume, because you have experience with this company, etc., people assume you can do this or you know that. Trust me, I'm a firm believer in business' needs to invest in people - but there's also a point where you need to know what you can and can't support. When I was teaching HS I spent several years at an very good, but small Catholic school in the inner city. Given the school's struggle with tuition, a small student population, bigotry from both minority and majority parents, perceptions about the neighborhood and the lack of resources mixed with the home lives of many students, the school continues to this day to provide a decent education. However, given the limitations of the school kids with real social-emotional problems would not find much help there, nor does it benefit the other students. I'm not about segregation - on the contrary I think one of the biggest problems with the economy and the cause of so much disparity in wealth is from the separation of the privilidged, especially regarding education. But, it's also about knowing who you are and what you can/can't do.

☛ So, all that being said, if the company has been burnt by people claiming they can do something but can't if there's reason to believe what you claim on your resume is false, or perhaps it's just the nature of the company, you may actually receive this sort of request to really test your knowledge about the program. However,

☛ it's more likely this is a way to test your ability to work out of your planned comfort zone, on a sudden request, or how you handle yourself under pressure. Very often people pick the most arcane or underused feature(s) of a particular program. Don't sweat it. Even if you don't remember and freeze up - just let it go - trying to do something out of context is also difficult - if you think of the answer at some point during the process - politely insert it in between questions.