Developer Questions in PSM I Test

Hello everybody,

I'm preparing for PSM I and found some articles saying that the test has questions from outside the guide, such as Developers Questions. Topics related but not limited to testing and pair programming. Where can I find an article, or a document that covers the topic? I'm scheduled to do the exam in few days, so a book won't be a good option. 

I'm consistently achieving 100% in the preparation test, did it more than 5 times in one session, but those are at most 40-50 questions on rotation. 

Thanks for your advice.

Ali