The same question bank as exam mode, minus the pressure. No clock, hints available if you want them, and a full explanation after every single answer — right or wrong. It's built for the stage where you're still learning a domain, not proving you've already learned it.
Getting a question right by luck teaches you nothing if you don't know why the answer was right. Every question explains the correct answer, and where it matters, why the tempting wrong answers are wrong.
Run training mode across a whole certification, one domain at a time, or just your repeat list — the questions you've previously gotten wrong across exam mode and flashcards. Most people go domain-by-domain right after finishing that domain's course module.
A hint is available on every question but never shown unless you ask for it — so training mode can be used with exam-mode discipline, or with hints on while you're still building a domain up from nothing.