問89
頻出度★★★
次のうち, 無線 LAN で使用される暗号化規格はどれか。
平成30年度 秋期 ITパスポート試験 問89
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 89
Incorrectア
A cookie is a mechanism by which a web server has the browser store temporary information, used to identify users and manage state. It is a web technology and has nothing to do with wireless LAN encryption.
Incorrectイ
ESSID is the “network name” used to identify a wireless LAN access point. It is a name for distinguishing which network to connect to, not a standard for encrypting communication.
Incorrectウ
MIME is a format standard that lets email handle data other than text (such as images, audio, and attachments). It is an email-related technology and is unrelated to wireless LAN encryption.
- エ
正解 The correct answer is “WPA2 (Wi-Fi Protected Access 2).” WPA2 is a standard for encrypting and protecting communication over a wireless LAN. It adopts the strong AES encryption method so that even if the radio signals are intercepted, their contents cannot be read. Because radio waves in a wireless LAN travel through the air and can be received by anyone, such an encryption standard is essential, and WPA2 is a representative example of it.
ここがポイント
- The encryption standard for wireless LANs = WPA2 (which uses AES). Grasp the idea that because wireless signals are easily intercepted, encryption is essential.
- Distinguish the confusing terms: ESSID is the “network name (identifier)” of a wireless LAN, cookie is for state management on the web, and MIME is a data format for email — none of them are encryption standards.
用語