The option that is not an example of a factor used in multi-factor authentication is option C: A captcha.
With multi-factor authentication (MFA), a user must give two or more verification factors in order to access a resource, such as an application, an online account, or a VPN.
Therefore, CAPTCHA works by requesting an action from users that a software bot is unable to complete. If the user completes the task successfully, it verifies to the service that they are a real person and not a spambot and permits them to proceed. Hence it is not a multi-factor authentication process.
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Which of the following is not an example of a factor used in multi-factor authentication? An ID card O A fingerprint O A captcha O A password
