Câu 90: AWS Certified Developer Associate(Old)

A company is running a web application that is using Amazon Cognito for authentication. The company does not want to use multi-factor authentication (MFA) for all the visitors every time, but the company's security team has concerns about compromised credentials. The development team needs to configure mandatoryMFA only when suspicious sign-in attempts are detected. Which Amazon Cognito feature will meet these requirements?

1. A. Short message service (SMS) text message MFA
2. B. Advanced security metrics
3. C. Time-based one-time password (TOTP) software token MFA
4. D. Adaptive authentication — đáp án hiện tại