In response to a couple of questions here’s what I had open in my browser windows during the test
The Analytics Api’s
Regex Testing Tool
Conversion University pages
The URL builder tool
My analytics account
My advice is make good use of the conversion university and review all the material even if you think you know it all already. Some of the questions are dead easy, others are designed to make you think. And, yes, I do think it was useful to take the test. Best of luck!