Why are there questions in PSM I that are not actually part of scrum

Hi All,

I failed today by 1 question (this seems to be an oddly popular failing score), I am irritated though as I faced many questions about topics that simply don't exist in the scrum guide, for example burn-down charts and extremely rare situations. I feel this to unfair and to have been lulled into a false sense of security by the repetitive nature of the questions in the open assessment. Add into this the fact that no information is provided on incorrect answers or even accurate areas of deficiency leave a student irate.

I love learning about scrum genuinely but can help feel mislead by the inclusion of so many questions about items that in my understanding are not actually part of scrum. Please could someone explain their inclusion, as its hard to understand how an exam on a subject can include things that are not actually part of a subject.

Thanks

Kieran