It's gonna go like this;

Tech test review guy: "How do you think you did?"

You: "Not sure, says I passed"

Tech rest review guy: "Here's your score, you missed (this many) and got (this percent). Any idea on the areas you may have missed?"

You: (say whatever you want)

Tech test review guy: "Well, here's what you missed, lets go over them"

He'll tell you what you answered, then the right answer. Probably give a you chance to explain how you derived your answer, etc.

Bang, zoom, you'll be out of there and on to the next portion. Don't sweat it. Worry about how you're doing overall, NOT one little aspect of the multi phase process.