問97
頻出度★★★
携帯電話会社が発行する, 契約情報を記録した IC カードであり, 携帯電話機などに差し込んで使用するものを何というか。
平成29年度 春期 ITパスポート試験 問97
テクノロジ系ネットワーク › ネットワーク応用
This question's explanation and your answers so far.
解説
問 97
Incorrectア
A B-CAS card is an IC card used for receiving and controlling the viewing of digital terrestrial broadcasts and the like (decrypting paid broadcasts); it is inserted into a TV or recorder. It has nothing to do with mobile phone contract information, so it is wrong.
Incorrectイ
A PC card (PCMCIA) is a card standard inserted into a laptop's expansion slot to add functionality. It is not meant to identify a contract holder, nor is it a card issued by a mobile phone carrier, so it is wrong.
Incorrectウ
An SD card is a storage card for saving photos and data. Its purpose is data storage, not recording contract information to identify a subscriber, so it is wrong.
- エ
正解 A SIM card (Subscriber Identity Module) is an IC card issued by a mobile phone carrier that records subscriber information such as the phone number and identification of the contract holder. By inserting it into the device slot, the device can communicate under that contract. A key feature is that if you move the card to another device, you can keep using the same contract and the same phone number as they are. It matches all of the conditions in the question — issued by a mobile phone carrier, records contract information, and is inserted into a device for use — so エ is correct.
ここがポイント
- A SIM card is an IC card issued by a mobile phone carrier for identifying the subscriber; it records contract information (phone number and contract-holder identification) and is inserted into a device for use. Swapping the card moves the contract to another device.
- Distinguish the uses of easily confused cards: B-CAS = broadcast viewing control, PC card = expanding PC functionality, SD card = storage card for saving data.
用語