The entire online skills test was very difficult. Only about 1/3 of the questions were 'sensible'. The remainder of the questions presented you with odd bits of code, classes with upside down copy constructors wrapped in sideways templates. Predicting the results of these snippets was difficult. My only thought was that this was a blunt tool if you were looking for a manager position. As a manager, if an engineer showed me any of the code from that test, I would mentor him on the importance of writing code humans can read and understand.