I think this is a very good answer. This is especially true when taking the CLD test. There are many ways to skin a cat when it comes to coding and style and there isn't a single correct answer. However, it is very important to know the NI answer. That is, you need to understand what NI is looking for when you are taking the certification tests.
What I did find was that the process of preparing for and taking the tests was extremely beneficial and it did make me think about my coding. The whole process has also helped me to improve my skills. (I recently passed the CLA exam so I have been through the complete process.)