Take. Your. Time. when you take the test. Our "class" is a bunch of online modules. You take a practice test to get access to register for the real one. We took our test at our district office wth the District admin. as the proctor.
Pay attetion to Temperature Controlled Foods, as there are a lot of questions that pertain to that. You can take all the time you need to take the test and I suggest you do it. I'm fairly well-versed in Food Safety as I, at the time, was both ServSafe and Target Manager Certified (I recently had to re-up). The temperature sensitive questions can really trip you up if you don't pay attention to them during the modules.
Good Luck!!