Our computer science GCSE exams are so flawed in so many ways. They're awfully vague or just completely wrong. In the last exam I did, I got a question that was basically:

"There is a server in a network. Name 3 of its functions"

If you did not provide an answer within the 5 "correct answers", it was considered incorrect as it was beyond the curriculum hence irrelevant.

That's like penalising people for not correctly guessing the contents of an opaque box...

I've genuinely lost more marks to the flaws in the marking scheme than genuine error.

Valve, pls fix