Which form of authentication provides the highest level of security by requiring multiple types of evidence before granting access to a network resource?
TACACS+
RADIUS
SSO
MFA
Multifactor authentication (MFA) offers the highest level of security among the options given as it requires two or more independent credentials for user verification. This approach combines something the user knows (like a password), something the user has (such as a security token), and something the user is (like a fingerprint) to ensure a higher degree of user identity verification compared to methods that utilize only a single factor.
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