Multi-factor auth basics.
Which statement about MFA is FALSE?
A) MFA should be enabled on the AWS root user.
B) MFA should be enforced on all human IAM users / SSO identities.
C) MFA on machine identities (IAM roles, instance profiles) is generally
replaced by short-lived credentials and STS, not by SMS codes.
D) MFA is optional for the root user; access keys alone are fine.Sign in to save your code and track progress across devices.
