問76
頻出度★★★
バイオメトリクス認証に関する記述a～cのうち，適切なものだけを全て挙げたものはどれか。 a 認証装置が大型なこともあり，ノートPCや携帯端末では利用されない。 b 利用者にとってパスワードを記憶する負担がない。 c 利用者の身体的特徴や，筆圧などの行動上の特徴を利用している。
平成29年度 春期 ITパスポート試験 問76
This question's explanation and your answers so far.
解説
問 76
Incorrectア
It lists only ‘a’, but a is wrong. Saying that the authentication device is large and therefore not used on notebook PCs or mobile terminals is contrary to fact. Fingerprint sensors and face-recognition cameras have been miniaturized and are standard on smartphones and notebook PCs. It is also inappropriate because it does not include the correct b and c.
Incorrectイ
It lists ‘a, b’, but a is wrong. Although b (no need to memorize a password) is correct, it includes the wrong a and omits the correct c, so it is inappropriate.
Incorrectウ
It lists ‘a, c’, but a is wrong. Although c (uses physical characteristics and behavioral characteristics such as writing pressure) is correct, it includes the wrong a and omits the correct b, so it is inappropriate.
- エ
正解 Biometric authentication (biometrics) verifies a person using ‘physical characteristics’ such as fingerprint, face, vein, or iris, and ‘behavioral characteristics’ such as the writing pressure or stroke order of a signature. Statement b is correct: because the person is matched by their own characteristics, the user has no burden of memorizing a password, which is an advantage. Statement c is correct: using physical characteristics and behavioral characteristics such as writing pressure is exactly the definition of biometric authentication. Therefore only b and c are appropriate, and choice エ, which lists only these two, is the correct answer.
ここがポイント
- Biometric authentication (biometrics) is a method that verifies a person using physical characteristics such as fingerprint, face, iris, and vein, and behavioral characteristics such as the writing pressure and stroke order of a signature.
- Its advantage is that it needs neither memory (a password) nor possession (a token), so the user’s burden is small; the devices have also been miniaturized and are widely built into notebook PCs and mobile terminals (the claim that they are too large to use is wrong).
用語