This is a question-and-answer question collection for the National Examination for Information Processing Engineers, which is the gateway to success for advanced IT engineers, for the Basic Information Processing Engineer Examination (FE) Subject A. All questions come with easy-to-understand explanations. Contains the following questions published by IPA. ・2023-2024 public questions (Subject A 40 questions) ・Sample problem set released in December 2022 (Subject A 60 questions) ・2020-2024 final