ITPEC IP April 2025 Question 45
ITPEC IP April 2025 — Question 45 of 100
A numerical code used to authenticate a user is a PIN — PIN stands for personal identification number.
A PIN is a knowledge factor that the legitimate user is expected to know. It may be combined with a card, device, or other factor, but the term itself correctly describes the numeric authentication code in option (c).
Answer (c)
Why not others:
- (a) describes single sign-on, not challenge-response authentication
- (b) describes biometric authentication, not single sign-on
- (d) describes a graphical or matrix-style password method; it remains one knowledge factor and is not inherently multi-factor
Key rule: Single sign-on spans services, biometrics use human traits, a PIN is a secret number, and multi-factor authentication combines different factor categories.
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