問8
頻出度★☆☆
電力会社において, 人による検針の代わりに, インターネットに接続された電力メータと通信することで, 各家庭の電力使用量を遠隔計測するといったことが行われている。 この事例のように, 様々な機器をインターネットに接続して情報を活用する仕組みを表す用語はどれか。
令和2年度 ITパスポート試験 問8
This question's explanation and your answers so far.
解説
問 8
Incorrectア
EDI (Electronic Data Interchange) is a mechanism for electronically exchanging commercial transaction data such as orders and invoices between companies in a standardized format. It is not the concept of connecting various devices to the internet, so it is incorrect.
- イ
正解 Choice イ. IoT (Internet of Things) refers to a mechanism that connects to the internet not only PCs and smartphones but also various 'things' such as electricity meters, home appliances, and sensors, and then collects and makes use of the information they gather. The example in the question — communicating with internet-connected electricity meters to remotely measure each household's electricity usage — is a typical IoT case of connecting devices to the internet and using the data, so イ is correct.
Incorrectウ
ISP (Internet Service Provider) refers to a business that provides internet access service to users. It denotes the entity that provides the connection, not a term for the mechanism of connecting devices to the internet and making use of information, so it is incorrect.
Incorrectエ
RFID is a specific technology that uses radio waves to read and write the information on IC tags without contact. Although it is an elemental technology for identifying objects, it is not a term that represents the whole mechanism of connecting various devices to the internet and using information, so it is incorrect.
ここがポイント
- IoT = a mechanism that connects various 'things' to the internet and makes use of the collected information. Remote reading of electricity meters is a representative example.
- Distinguishing confusable acronyms: EDI = exchange of electronic commerce transaction data between companies; ISP = internet access service provider; RFID = contactless tag-reading technology using radio waves.
用語