A Developer Is Developing an Application That Manages Financial Transactions

question 292

Multiple Choice

A Developer is developing an application that manages financial transactions. To improve security, multi-factor authentication (MFA) will be required as part of the login protocol. What services can the Developer use to meet these requirements?

• A) Amazon DynamoDB to store MFA session data, and Amazon SNS to send MFA codes
• B) Amazon Cognito with MFA
• C) AWS Directory Service
• D) AWS IAM with MFA enabled

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Definitions:

Sum Of Squares

A statistical technique used to measure the dispersion or variation within a data set, calculated by squaring each deviation from the mean and summing these squares.

Error

The difference between the observed value and the true value of a quantity.

Dependent Variable

In an experimental setting, the variable being tested and measured, presumed to change in response to variations in the independent variable.

Sample Correlation Coefficient

A numerical value that determines both the magnitude and direction of a straight-line association between two variables measured quantitatively in a given sample.