IPA IP 2025 Question 10
A question IPA Japan published in 令和7年度 ITパスポート試験 公開問題 問10, translated into English. ITPEC is based on the same exams.
In generative AI, which of the following is the most appropriate term that represents the output of content that is plausible but differs from the facts?
Explanation
Hallucination — a generative AI producing content that sounds plausible but is not true.
A large language model generates text by predicting likely next words from patterns in its training data; it does not check facts. When it lacks the knowledge or the question is ambiguous, it can still produce a fluent, confident answer with invented facts, figures, quotations or sources. Because the output looks convincing, its content has to be checked against reliable sources before it is used.
Answer (d)
Why not others:
- •(a) Echo chamber — on social media, hearing only opinions like one's own until they seem to be everyone's, so views are reinforced
- •(b) Singularity — the technological singularity, the hypothetical point at which AI surpasses human intelligence
- •(c) Deepfake — fake but realistic video, images or audio of real people made with AI; it is deliberate fabrication, not an AI's mistaken answer
Key rule: Hallucination is a generative AI's plausible but false output; check what it says before relying on it.
Basic Theory · AI-written, may contain errors
This question comes from the past questions IPA Japan publishes, translated into English by ITPEC Practice. ITPEC Practice is an independent study tool and is not affiliated with IPA or ITPEC. See the original paper (PDF) or Report an issue.