AWS Certified Specialty SCS-C02 Syllabus Exam Questions Answers

because these are the actions that can improve IAM account root user security. IAM account root user is a user that has complete access to all AWS resources and services in an account. IAM account root user security is a set of best practices that help protect the account root user from unauthorized oraccidental use. Deleting the access keys for the account root user in every account can help prevent programmatic access by the account root user, which reduces the risk of compromise or misuse. Enabling MFA on every account root user in all accounts can help add an extra layer of security for console access by requiring a verification code in addition to a password. Creating a custom IAM policy to limit permissions to required actions for the account root user and attaching the policy to the account root user can help enforce the principle of least privilege and restrict the account root user from performing unnecessary or dangerous actions. The other options are either invalid or ineffective for improving IAM account root user security.

Understand the Problem:

The inability of external users to log in indicates potential issues with configuration or permissions.

Review Cognito Configuration:

Check for recent changes in Cognito user pool settings, such as password policies or authentication flow configurations.

Ensure the app client settings (e.g., callback URLs, OAuth flows) are correctly configured.

Review IAM Policies and Role Trust Relationships:

Verify that IAM roles used by Cognito (e.g., for identity providers) have the correct policies attached.

Ensure trust relationships for roles are properly configured to allow Cognito to assume them.

Advantages of Reviewing Configurations:

Addresses the root cause of login failures without disrupting user experience (e.g., resetting passwords).

Next Steps:

If no issues are found in the configuration, proceed with detailed logging and monitoring using CloudTrail (Option A).

Troubleshooting Amazon Cognito User Pools

Configuring App Clients in Cognito

IAM Roles for Cognito

To secure the images to limit their distribution, the company should take the following actions:

Update the S3 bucket policy to restrict access to a CloudFront origin access identity (OAI). This allows the company to use a special CloudFront user that can access objects in their S3 bucket, and prevent anyone else from accessing them directly.

Add a CloudFront geo restriction deny list of countries where the company lacks a license. This allows the company to use a feature that controls access to their content based on the geographic location of their viewers, and block requests from countries where they do not have a distribution license.

To minimize downtime in response to DDoS attacks, the company should do the following:

Subscribe to AWS Shield Advanced and reach out to AWS Support in the event of an attack. This provides access to 24x7 support from the AWS DDoS Response Team (DRT), as well as advanced detection and mitigation capabilities for network and application layer attacks.

Use AWS WAF to create rules to respond to such attacks. This allows the company to filter web requests based on IP addresses, headers, body, or URI strings, and block malicious requests before they reach the web applications.