受発注や決済などの業務で, ネットワークを利用して企業間でデータをやり取りするものはどれか。
平成30年度 春期 ITパスポート試験 問22
This question's explanation and your answers so far.
問 22
Incorrectア
BtoC (Business to Consumer) refers to a form of e-commerce between a company and general consumers. It is a transaction in which a company sells goods or services to consumers, as in online shopping, not the exchange of data between companies (company to company) that the question asks about, so it is incorrect.
Incorrectイ
A CDN (Content Delivery Network) is a mechanism that places website content such as images and videos on many geographically distributed servers to deliver it efficiently to users. Its purpose is to speed up delivery and balance load; it does not exchange inter-company commercial transaction data such as ordering or settlement, so it is incorrect.
- ウ
正解 The correct answer is (ウ), EDI (Electronic Data Interchange). EDI is a mechanism for exchanging inter-company commercial transaction data — such as ordering and receiving orders, shipping, billing, and settlement — electronically over a network, following a standard format agreed on in advance (rules for data formats and communication procedures). Because computers exchange data directly instead of passing paper slips back and forth, it helps reduce input errors and makes clerical processing faster and more efficient. This matches exactly the question's description of something that exchanges data between companies over a network in operations such as ordering, receiving orders, and settlement.
Incorrectエ
An SNS (Social Networking Service) is an internet service that supports connections and interaction between people. Its main purpose is communication and information sharing between individuals; it is not a mechanism for exchanging inter-company business data such as ordering and settlement in a standard format, so it is incorrect.
- EDI is an electronic data interchange mechanism that exchanges commercial transaction data — such as ordering, billing, and settlement — between companies (BtoB) over a network in a standardized format.
- Distinguish EDI from BtoC, CDN, and SNS by the parties to the transaction (between companies, or between a company and consumers) and the purpose (exchanging commercial transaction data, delivering content, or social interaction).