図書を特定するために世界標準として使用されているコードはどれか。
平成27年度 秋期 ITパスポート試験 問20
This question's explanation and your answers so far.
問 20
- ア
正解 ISBN stands for International Standard Book Number, an internationally standardized code defined to uniquely identify books all over the world. It is made up of numbers that represent a country code, the publisher, the title, and so on, and it is also used in the barcode on the back cover of a book. This exactly matches the worldwide standard code for identifying books that the question asks about, so ア is correct.
Incorrectイ
ITF (Interleaved Two of Five) is a barcode system used to identify logistics and grouped packaging (such as cardboard boxes); it is not a worldwide standard meant for identifying books.
Incorrectウ
JAN (Japanese Article Number) is a barcode standard for identifying Japanese products (general consumer goods); its scope covers products in general, not limited to books. It is not a book-specific worldwide standard, so it is wrong.
Incorrectエ
A QR code is a kind of two-dimensional code that can store a large amount of information; it has a wide range of uses such as URLs and payment information, but it is not defined as a worldwide standard code for identifying books.
- ISBN (International Standard Book Number) is an international standard for uniquely identifying books all over the world.
- Distinguish their different uses: JAN is for products in general, ITF is for logistics and grouped packaging, and QR is a general-purpose two-dimensional code.