poor example - speed camera is collection device for an information system
In most cases, you (student) are the user of the school library catalogue database
the librarian is a participant of the that information system
Gigacube??? no idea where you get that idea from. IPT would be beneficial for any Informatics course and a frame of reference for junior year subjects in IT/Computer whatever.
I suggest you get a copy of the syllabus and make notes against the dot points. Sam's textbook is a great reference but is very indepth.
Re Qu 6 structured/traditional (also known as Waterfall) is the UPDIT part of the Project Work you should have studied. (Core topic 1)
If you still have a Yr 11 textbook - go over all of it. Does your new teacher know about your Yr11 situation? Tell them you feel your preliminary knowledge is lacking. Obviously a teacher wouldnt exactly repeat information in year 12 that they had delivered in year 11, they might skim over it...