問27
頻出度★★☆
流通システムや販売情報システムなどで用いられている商品コードはどれか。
平成24年度 秋期 ITパスポート試験 問27
ストラテジ系法務 › 標準化関連
This question's explanation and your answers so far.
解説
問 27
Incorrectア
ASCII is the most basic character encoding standard, representing letters, digits, and symbols with 7 bits (128 characters). It is a convention for handling characters as numeric values inside a computer, not a code system for identifying products.
Incorrectイ
EUC (Extended UNIX Code) is a character encoding used on UNIX-based operating systems to handle multi-byte characters such as Japanese. This too is a way of representing characters, not a product code used to identify products in distribution.
- ウ
正解 The correct answer is ウ, JAN. A JAN code (Japan Article Number) is Japan's common product code, a system defined so that each product of each company can be identified uniquely. It is printed on product packages as a barcode, and when it is scanned at a POS register in a store, the sales information system (the POS system) can automatically record sales and inventory for each individual product. The standard type has 13 digits and consists of a country code (45 or 49 for Japan), a company code, an item code, and a check digit; there is also an 8-digit shortened type for small products. Because it is compatible with EAN, the international product code, it can be used as it is in overseas distribution systems too. JAN is the only choice that fits the product code used in distribution systems and sales information systems in the question.
Incorrectエ
JIS is the general name for Japan's domestic standards, the Japanese Industrial Standards (Nihon Sangyo Kikaku, formerly Nihon Kogyo Kikaku); in an IT context it usually refers to the JIS kanji code (a character encoding). The JAN code is indeed defined as a standard by JIS, but JIS itself is not the name of a product code that identifies a specific product, so it cannot be the answer to this question.
ここがポイント
- A JAN code is Japan's common product code. It has 13 digits (standard type) or 8 digits (shortened type), consists of a country code, a company code, an item code, and a check digit, and is used as a barcode to identify products in POS systems. It is compatible with the international standard EAN.
- ASCII, EUC, and JIS (kanji code) are all character codes for representing characters on a computer, and their purpose differs from that of a product code, which identifies products. The question tests whether you can distinguish standards with similar-looking names by their purpose.
用語