問89
頻出度★★★
システムの利用者認証に関する記述のうち, 適切なものはどれか。
令和6年度 ITパスポート試験 問89
This question's explanation and your answers so far.
解説
問 89
Incorrectア
A mechanism that enables logging in to multiple servers and applications with a single authentication is the description of single sign-on (SSO). Challenge-response authentication is a method in which the value (the response) computed from a random number sent by the server (the challenge) and the user's secret information is returned, so that the password itself is not sent over the network during identity verification; this does not match the statement.
Incorrectイ
A mechanism that authenticates a person using physical features such as fingerprints or voiceprints is the description of biometric authentication (biometrics). Single sign-on is a mechanism that lets a user access multiple systems with a single authentication, and has nothing to do with physical features, so it is incorrect.
- ウ
正解 The correct answer is ウ. A PIN (Personal Identification Number) is a secret passcode composed of a string of digits that an information system uses to verify a user's identity. A representative example is the few-digit number you enter for a cash card or to unlock a smartphone, and this statement correctly matches that definition.
Incorrectエ
A method in which one remembers information about positions and, at authentication time, inputs as a password the digits or characters arranged at the remembered positions within a table displayed on the screen is the description of matrix authentication. Multi-factor authentication refers to a method that combines two or more different kinds of factors, such as knowledge, possession, and biometrics, so it does not match the statement.
ここがポイント
- A PIN is a passcode composed of a string of digits used for identity verification; this question asks about the definition itself.
- Be careful not to mix up authentication terms: distinguish single sign-on (one authentication for multiple systems), biometric authentication (physical features), matrix authentication (positions used as a password), and multi-factor authentication (a combination of different kinds of factors).
用語