問88
頻出度★★★
IEEE 802.11伝送規格を使用した異なるメーカの無線LAN製品同士で相互接続性が保証されていることを示すブランド名はどれか。
平成30年度 春期 ITパスポート試験 問88
テクノロジ系ネットワーク › ネットワーク方式
This question's explanation and your answers so far.
解説
問 88
Incorrectア
MVNO stands for Mobile Virtual Network Operator, a type of business that does not own its own wireless network but leases lines from other companies to provide mobile phone services. It is not a brand name indicating wireless LAN interoperability.
Incorrectイ
NFC is the Near Field Communication standard, a technology that communicates by holding devices close together at a very short distance of a few centimeters. It is used for IC cards, electronic money and the like, and is not an interoperability brand for IEEE 802.11 wireless LAN.
- ウ
正解 The correct answer is (ウ) Wi-Fi. Wi-Fi is a brand name defined by the industry group Wi-Fi Alliance, indicating that a wireless LAN product based on the IEEE 802.11 standard has passed the interoperability certification test. When a product carries this certification logo, the products are guaranteed to communicate correctly even if they are made by different manufacturers. This exactly matches the brand name asked in the question that indicates interoperability is guaranteed among wireless LAN products from different manufacturers.
Incorrectエ
WPA2 is a security standard for encryption and authentication in wireless LAN, a mechanism to protect the content of communications. It is not a brand name that guarantees interoperability among products.
ここがポイント
- Wi-Fi is a certification brand by the Wi-Fi Alliance that guarantees wireless LAN products conforming to the IEEE 802.11 standard can interoperate even across different manufacturers.
- Distinguishing confusable terms: MVNO = a business model that leases mobile lines, NFC = Near Field Communication, WPA2 = a security standard for wireless LAN.
用語