I am responsible for creating a team, which will build a Flex application. Unfortunately I have zero experience with Flex. So I found an expert within our company to interview candidates. Our expert came up with the following questions:

1. how to write item renderers
2. explain methods commitProperties, updateDisplayList, measure
3. binding positive / negative parts, problems with binding
4. what is ClassFactory ? And why is it needed ?
5. how callLater works ?
6. what is layoutChrome ?
7. what is skin ?
8. did you use autogeneration for Java backend ?
9. how to override managers ? like PopupManager .

These sound a little too specific for my taste. Would you say they are decent questions? Is it fair to say, for example, that if Flex developer does not know how to write item renderer, he has very little knowledge of Flex?