Type will provide you with a case that you must solve. It will normally be an issue or problem they had in the past or a currently working on. They will want to see your thought process. They will be looking to see how analytical and creative you are.
That is difficult to quantify since inspiration can occur anywhere or at anytime, sometimes related to the problem at hand, sometimes not. It's a spark that leads down a path that isn't always clear until the end has been reached.
I explained the ways in this position I could use my creativity and still stick to the regimented processes that are required. When push came to shove, it was just semantics with the use of the word "creative".
I made a technical error in judgment while compressing and encoding a video once. I was given an unrealistic and tight deadline. The client sent me a bigger file than what we normally offer and I forgot to compress it first. It took me 30 minutes more than it normally takes to process and upload the file the clients gave me and ultimately, it was uploaded late. We lost the client. However, I worked harder and did my best never to make the same mistake again afterward. I learned from it and have yet to make huge errors like that again.