Amazon SCS-C02 Practice Test - Questions Answers, Page 7

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.

A is incorrect because reviewing the cross-account role permissions and the S3 bucket policy is not enough to troubleshoot the permissions issue. You also need to verify that the Amazon S3 block public access option in the member account is deactivated, as well as the permissions boundary and the SCPs of the role in the member account.

D is correct because evaluating the SCPs and the permissions boundary of the role in the member account can help you identify any missing permissions or explicit denies that could prevent the administrator from making the S3 bucket public.

E is correct because ensuring that the S3 bucket policy explicitly allows the s3 PutBucketPublicAccess action for the role in the member account can help you override any block public access settings that could prevent the administrator from making the S3 bucket public.

To ensure that database credentials are stored securely and rotated periodically, the security engineer should do the following:

Use AWS Secrets Manager to store database credentials. This allows the security engineer to encrypt and manage secrets centrally, and to configure automatic rotation schedules for them.

Use IAM roles for ECS tasks to restrict access to database credentials to specific containers only. This allows the security engineer to grant fine-grained permissions to ECS tasks based on their roles, and to avoid sharing credentials as plaintext with other teammates.

To meet the requirements of importing their own key material, setting an expiration date on the keys, and deleting keys immediately, the security engineer should do the following:

Configure AWS KMS and use a custom key store. This allows the security engineer to use a key manager outside of AWS KMS that they own and manage, such as an AWS CloudHSM cluster or an external key manager.

Create a customer managed CMK with no key material. Import the company's keys and key material into the CMK. This allows the security engineer to use their own key material for encryption and decryption operations, and to specify an expiration date for it.

To quickly identify other compute resources with the specific version of the web framework installed, the team should do the following:

Scan all the EC2 instances with AWS Systems Manager to identify the vulnerable version of the web framework. This allows the team to use AWS Systems Manager Inventory to collect and query information about the software installed on their EC2 instances, and to filter the results by software name and version.

To restrict the contractor's IAM account access to the EC2 console without providing access to any other AWS services, the security engineer should do the following:

Create an IAM permissions boundary policy that allows EC2 access. This is a policy that defines the maximum permissions that an IAM entity can have.

Associate the contractor's IAM account with the IAM permissions boundary policy. This means that even if the contractor's IAM account is assigned additional permissions based on IAM group membership, those permissions are limited by the permissions boundary policy.

To ensure that Security Hub can evaluate their resources for CIS AWS Foundations compliance, the security engineer should do the following:

Ensure that AWS Config is enabled in the account. This is a service that enables continuous assessment and audit of your AWS resources for compliance.

Ensure that the required AWS Config rules have been created for the CIS compliance evaluation. These are rules that represent your desired configuration settings for specific AWS resources or for an entire AWS account.

To grant appropriate access to the application modules, the security engineer should do the following:

Configure an IAM policy for each module. Specify the ARN of an Amazon Redshift database user that allows the GetClusterCredentials API call. This allows the application modules to use temporary credentials to access the database with the permissions of the specified user.

Create local database users for each module. This allows the security engineer to create separate users for read/write and read-only functionality, and to assign them different privileges on the database tables.