IPA FE Subject A 2026 Question 18
A question IPA Japan published in 令和８年度 基本情報技術者試験 科目A 公開問題 問18, translated into English. ITPEC is based on the same exams.
Which of the following is not appropriate as an example of AI?
Explanation
The PID motor controller — it is classical feedback control that applies a fixed formula, not artificial intelligence.
A PID controller measures the controlled variable, compares it with the target value and corrects its output from the difference, using fixed proportional, integral and derivative terms set by its designer. It does not learn, infer or judge; it is automatic control, not AI.
The other three are AI: each learns from data or infers meaning and decides what to do.
Answer (a)
Why not others:
- •(b) — the robot learns the room's size, shape and furniture layout and plans its own route: learning and planning
- •(c) — the chatbot infers the meaning of questions in natural language and answers them: natural language processing
- •(d) — software that beats professional players at board games by processing large amounts of data, such as AlphaGo, is a well-known example of AI
Key rule: Feedback control that applies a fixed formula to an error is automatic control; AI involves learning, inference or judgment from data.
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.