API | ICP Certifications
2. Exam Structure The API 510 exam day is 7.5 hours long - a short tutorial session, 2.75 hours for the closed-book portion, a 45-minute lunch break and 3.75 hours for the open-book portion. There are 170 questions on the exam, of which only 140 are scored. The remaining are pretest questions. Pretest Questions FAQs