The ones I stuffed up:
10. I put d), only by process of elimination - to me build the first version of the sysytem implies functionality, and we were taught prototypes never have functionality, they are merely a thing to show your client to keep them happy, therefore you NEVER revise them and build on them. I should have looked at the silly-bus rather than using REAL WORLD knowledge!.
19. I put d), I didn't study my system folwchart diagrams because I lost my IPT book at the last mnute, and couldn't find them anywhere. but there may be hope for this one, i mean, in the description - the operator is manually entering the data... meh, i dunno