Multiple-factor authentication refers to using more than one type of credential.

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Multiple Choice

Multiple-factor authentication refers to using more than one type of credential.

Explanation:
Multi-factor authentication relies on presenting more than one type of credential to verify identity. This means you might need something you know (a password), something you have (a token or phone), or something you are (a fingerprint). Because MFA requires multiple credential types, the statement that it uses more than one type of credential is true. If only a single factor were used, that would be single-factor authentication. The notions that MFA is optional or not required do not describe its core idea.

Multi-factor authentication relies on presenting more than one type of credential to verify identity. This means you might need something you know (a password), something you have (a token or phone), or something you are (a fingerprint). Because MFA requires multiple credential types, the statement that it uses more than one type of credential is true. If only a single factor were used, that would be single-factor authentication. The notions that MFA is optional or not required do not describe its core idea.

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