ISTQB Specialist (CT-GenAI v1.1) Probeprüfung #1

A full-length practice exam for the ISTQB Certified Tester Testing with Generative AI (CT-GenAI) v1.1 syllabus, in force since April 2026. It follows the official exam format exactly: 40 questions worth 46 points in total, 60 minutes, and 30 points needed to pass (65%). Scoring is weighted the way the real exam weights it — a K1 or K2 question is worth 1 point and a K3 question 2 points — so the six K3 items carry 12 of the 46 points between them. The questions reproduce the official distribution across the five chapters: 7 from Introduction to Generative AI, 11 from Prompt Engineering (16 points, and the home of five of the six K3 questions), 10 from Managing (AI) Risks, 5 from LLM-Powered Infrastructure and 7 from Deployment & Integration. The K-level mix matches the published structure as well: 8 questions at K1, 26 at K2 and 6 at K3. The applied questions are the ones that decide the result, and in this mock they are real tasks rather than definitions: rewriting a prompt so that test conditions cover every rule and boundary of an insurance quote requirement, spotting that boundary values returned for a two-decimal money field are wrong, specifying a synthetic test data set that satisfies its own consistency rules without seeding the prompt from production, improving a user story review so each issue can be checked against the text, and choosing controls for a pilot after a data disclosure, an unreviewed reuse and a silently omitted business rule. Every answer option — correct and incorrect alike — carries its own rationale, and every question has an overall explanation, so a wrong answer tells you which misconception to fix rather than only that you lost a point. Remember that CT-GenAI is about testing with generative AI; testing AI-based systems is the subject of CT-AI, which is a different exam.