AWS Certified SysOps Administrator – Associate (legacy) — Question 390

For IAM user, a virtual Multi-Factor Authentication (MFA) device uses an application that gener-ates ______-digit authentication codes that are compatible with the time-based one-time password (TOTP) standard.

Answer options

• A. three
• B. four
• C. six
• D. five

Correct answer: C

Explanation

Virtual MFA applications compatible with the TOTP standard generate 6-digit authentication codes that rotate every 30 seconds. AWS IAM requires this 6-digit format for multi-factor authentication, making options A, B, and D incorrect.