My advice before attempting any of the quizzes is to not think too much. The questions are staright forward and contain the information you need or think about. If you start thinking complexly, then you’ll be going down a rabbit hole.
The way to think about structured and unstructured data is: can you put the information in a table, can you visualise having such information in a table ?
Yes, you can have things like height, weight, colour, zip codes in a table, so all of that would be structured data.
Audio clips, images, large amount of texts, you can’t have them in a table, right ? So they would be unstructured data Again, the point is to not think about things too complexly.
You are totally correct and Mubsi too is probably right from his end.
But to answer your query, I would say that yes specific models set specific requirements to train and learn parameters.
But here, you have to understand that set questions in the quiz section have been designed after having this understanding that the learners could visualize the model problems and their complexities under their own power after visiting the whole video lessons and resources.