Honestly digital.poet, a student almost ready for their RT exam who doesn't know exactly what a "Flight Information Service" means??
Actually, the CAA realised some time ago that they didn't really know exactly what a "Flight Information Service" means, hence many hundreds of thousands of pounds spent on a review of air traffic services outside controlled airspace. ;-)
Your questions show a considerable depth of understanding of the subject matter. You should have no trouble with an exam.