Choose a certification track, then pick a paper. Each paper is timed, lets you flag questions for review, and shows a full breakdown of what you missed at the end.
A timed practice run. Answer at your own pace, flag questions to revisit, change your mind freely, then review exactly what you missed.
The clock starts when you begin. When it hits zero, the exam submits automatically with whatever you've answered.
You have 0 unanswered questions. Once you submit, you can't change your answers.