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Question 272 - SCS-C02 discussion

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A Security Engineer is working with a Product team building a web application on AWS. The application uses Amazon S3 to host the static content, Amazon API

Gateway to provide RESTful services; and Amazon DynamoDB as the backend data store. The users already exist in a directory that is exposed through a SAML identity provider.

Which combination of the following actions should the Engineer take to enable users to be authenticated into the web application and call APIs? (Choose three.)

A.
Create a custom authorization service using AWS Lambda.
Answers
A.
Create a custom authorization service using AWS Lambda.
B.
Configure a SAML identity provider in Amazon Cognito to map attributes to the Amazon Cognito user pool attributes.
Answers
B.
Configure a SAML identity provider in Amazon Cognito to map attributes to the Amazon Cognito user pool attributes.
C.
Configure the SAML identity provider to add the Amazon Cognito user pool as a relying party.
Answers
C.
Configure the SAML identity provider to add the Amazon Cognito user pool as a relying party.
D.
Configure an Amazon Cognito identity pool to integrate with social login providers.
Answers
D.
Configure an Amazon Cognito identity pool to integrate with social login providers.
E.
Update DynamoDB to store the user email addresses and passwords.
Answers
E.
Update DynamoDB to store the user email addresses and passwords.
F.
Update API Gateway to use a COGNITO_USER_POOLS authorizer.
Answers
F.
Update API Gateway to use a COGNITO_USER_POOLS authorizer.
Suggested answer: B, C, F

Explanation:

The combination of the following actions should the Engineer take to enable users to be authenticated into the web application and call APIs are:

B) Configure a SAML identity provider in Amazon Cognito to map attributes to the Amazon Cognito user pool attributes. This is a necessary step to federate the existing users from the SAML identity provider to the Amazon Cognito user pool, which will be used for authentication and authorization1.

C) Configure the SAML identity provider to add the Amazon Cognito user pool as a relying party. This is a necessary step to establish a trust relationship between the SAML identity provider and the Amazon Cognito user pool, which will allow the users to sign in using their existing credentials2.

F) Update API Gateway to use a COGNITO_USER_POOLS authorizer. This is a necessary step to enable API Gateway to use the Amazon Cognito user pool as an authorizer for the RESTful services, which will validate the identity or access tokens that are issued by Amazon Cognito when a user signs in successfully3.

The other options are incorrect because:

A) Creating a custom authorization service using AWS Lambda is not a necessary step, because Amazon Cognito user pools can provide built-in authorization features, such as scopes and groups, that can be used to control access to API resources4.

D) Configuring an Amazon Cognito identity pool to integrate with social login providers is not a necessary step, because the users already exist in a directory that is exposed through a SAML identity provider, and there is no requirement to support social login providers5.

E) Updating DynamoDB to store the user email addresses and passwords is not a necessary step, because the user credentials are already stored in the SAML identity provider, and there is no need to duplicate them in DynamoDB6.

1: Using Tokens with User Pools 2: Adding SAML Identity Providers to a User Pool 3: Control Access to a REST API Using Amazon Cognito User Pools as Authorizer 4: API Authorization with Resource Servers and OAuth 2.0 Scopes 5: Using Identity Pools (Federated Identities) 6: Amazon DynamoDB

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asked 16/09/2024
Guilherme Silva
27 questions
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