Don't let the the negative replies, you read here change your mind. Not everyone has to "start at the bottom", just because so-and-so did, and he thinks it is the only way to do it. That's rediculous.
If you think you can pass it, take it. If you think you can make a go at it, go for it.
Just don't pass the test and think you know everything, as learning never ends unless you die.