Question: 1) Did you submit data model or just the JPA entities class diagram. I think both provides exactly same information.
I provided only JPA entities in my class diagram.
2) I have created wire frames which are in sync with DM and they are just hand written so far. I have no time to draw them using tools as there are no extra marks for them in the exam. Do you think, I should spend time and submit proper wireframes so examiner can understand what's in my mind? or scan copy of hand written wireframes will also be ok?
I created very simple Wireframes using Visio 2010 and it can be done quickly and easily. But you need to understand there is no extra marks for them. Sending scanned copy is a good idea-haven't heard of it, may be you can try it out and let us know