I believe there are exemptions for those holding an appropriate degree, or something like that. See Part 66.
The university degree I'm willing to join is actually giving Cat C licence according to Part 66. It's a public school authorized by EASA, seems rare in Europe though.
In a general way, can we say B1/B2 Licence are matching with an A/C mechanic/electrician position, whereas holding a C licence is not related to a specific position?
These are maybe "stupid" questions, but I don't completely understand how Part 66 licences may be related to jobs when working in line or base maintenance.
Maybe we could consider an A/C coming for a C-check: what kind of people (licenced or not?) are usually required to make the A/C airborne and certified again?