A user authenticating with Amazon Cognito will go through a multi-step process to bootstrap their
credentials.
Amazon Cognito has two different flows for authentication with public providers. Which of the
following are the two flows?

A.
Authenticated and non-authenticated

B.
Public and private

C.
Enhanced and basic

D.
Single step and multistep

Explanation:
A user authenticating with Amazon Cognito will go through a multi-step process to bootstrap their
credentials. Amazon Cognito has two different flows for authentication with public providers:

enhanced and basic.
http://docs.aws.amazon.com/cognito/devguide/identity/concepts/authentication-flow/