Which term best describes a security measure that requires more than one credential?

Which term best describes a security measure that requires more than one credential?

• A. Multi-Factor Authentication
• B. Single-Factor Authentication
• C. Biometric Lock
• D. Password Policy

Answer: (A)

Requiring more than one credential is Multi-Factor Authentication. It means you must provide at least two independent proofs of identity, usually combining factors from distinct categories: something you know (like a password), something you have (a token or a mobile app code), and something you are (a biometric). This layered approach makes it much harder for an attacker to gain access because compromising just one credential isn’t enough. Single-Factor Authentication uses only one credential, such as just a password, which is easier to compromise. A biometric lock describes a method based on a biometric factor, which by itself is typically a single credential, though it can be used as part of a multi-factor setup if paired with another credential. A password policy focuses on how passwords are chosen and managed, not on requiring multiple credentials for access.

Requiring more than one credential is Multi-Factor Authentication. It means you must provide at least two independent proofs of identity, usually combining factors from distinct categories: something you know (like a password), something you have (a token or a mobile app code), and something you are (a biometric). This layered approach makes it much harder for an attacker to gain access because compromising just one credential isn’t enough.

Single-Factor Authentication uses only one credential, such as just a password, which is easier to compromise. A biometric lock describes a method based on a biometric factor, which by itself is typically a single credential, though it can be used as part of a multi-factor setup if paired with another credential. A password policy focuses on how passwords are chosen and managed, not on requiring multiple credentials for access.