Question 73

Explanation

The correct answer: Multi-factor authentication (MFA) is a security measure that uses multiple methods to verify the identity of a user. It requires users to provide multiple pieces of evidence (factors) to verify their identity. These factors can include something they know (like a password), something they have (like a security token or mobile phone), and/or something they are (like a fingerprint or facial recognition). Because MFA requires multiple different forms of authentication, it gives a higher level of security than other types of authentication and significantly reduces the likelihood of unauthorized access. The incorrect answers: Two-factor authentication (2FA) is a type of multi-factor authentication but as it requires only two pieces of evidence to verify the user's identity, it isn't as secure as a multi-factor authentication system that requires more than two forms of authentication. Biometric authentication is a type of authentication that uses biological characteristics, such as fingerprints or facial recognition, to verify a user's identity. While biometric authentication does provide a higher level of security than traditional passwords, it is usually just one factor in a multi-factor authentication system. By itself, it does not provide as much protection as a multi-factor authentication system. Single factor authentication is a security measure that only uses one method, such as a password, to verify a user's identity. It is indeed a common security measure but it's not as secure as MFA, 2FA, or biometric authentication because it's more susceptible to being compromised (for instance, through password cracking or phishing attacks).