Comment by Mordisquitos

There is also a very good TV comedy-drama film of 1979 about some characters working towards passing the Knowledge exam. The film was, of course, called The Knowledge:

https://en.wikipedia.org/wiki/The_Knowledge_(film)

It's available on YouTube (potential geoblocking notwithstanding):

https://www.youtube.com/watch?v=oSAAB1ZmudY