It really depends on what she's being hired for. If she's making programs for a living, theyed probabily test her on the most popular set of programing languages such as: Visual basic, C, and C+. They would also probabily test her on the most important aspect of programming which is turning the finished programming into binary or ASCII incoded messages so that the computer can understand it.
I'm an independant programmer so i wouldn't know for-shure.