What does authentication primarily verify?

• A. The user's identity.
• B. The user's authorization level
• C. The user's password strength
• D. The user's device compatibility

Answer: (A)

Authentication is about proving who you are. When you log in, you present evidence such as a password or a biometric scan, and the system checks that this evidence matches the identity on the account. If it matches, you’re authenticated, meaning the system has verified your identity. After that step, authorization comes into play to determine what resources or actions you’re allowed to access. Password strength affects how hard it is to crack the credential, not the act of verifying identity itself, and device compatibility isn’t related to identifying the user.