Amazon DOP-C02 Exam Questions

To allow an EC2 instance to access CodeArtifact, an IAM role attached via an instance profile must be granted permissions to access the CodeArtifact repository. The EC2 instance assumes this role.

The instance then uses the AWS CLI command aws codeartifact login to authenticate and configure the package manager (e.g., pip) to use the CodeArtifact repository. This command obtains an authorization token and sets up repository credentials securely on the instance.

Service-linked roles (Option A) are managed by AWS services, not used for instance access. CodeArtifact does not support ACLs (Option C), and resource-based policies (Option B) do not grant access to EC2 instances by principal.

This method is standard for securely managing credentials and access to CodeArtifact in automated deployments.

AWS CodeArtifact Access Control and Authentication:

'Use IAM roles attached to compute resources and the aws codeartifact login command to authenticate to repositories.'

(AWS CodeArtifact Developer Guide)

To restrict direct access to API Gateway, add a custom header in the CloudFront distribution origin request and use a Lambda authorizer in API Gateway to validate that header. Only requests routed through CloudFront will include this header. This is the AWS-recommended pattern in ''Secure your APIs behind CloudFront using custom headers and Lambda authorizers.''

The engineer should make the following changes to achieve a policy of least permission:

A: Add a condition to ensure that the principal making the request is an AWS Lambda function. This ensures that only Lambda functions can execute this policy.

B: Narrow down the resources by specifying the ARN of EC2 instances instead of allowing all resources. This ensures that the policy only affects EC2 instances.

D: Add a condition to ensure that this policy only applies to EC2 instances tagged with ''Environment: NonProduction''. This ensures that production environments are not affected by this policy.

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AWS Identity and Access Management (IAM) - AWS Documentation

Certified DevOps Engineer - Professional (DOP-C02) Study Guide (page 179)

Create an Amazon EventBridge (Amazon CloudWatch Events) rule that matches an AWS Config evaluation result of NON_COMPLIANT for the restricted-ssh rule. Configure an input transformer for the EventBridge (CloudWatch Events) rule. Configure the EventBridge (CloudWatch Events) rule to publish a notification to the SNS topic. This approach uses Amazon EventBridge (previously known as Amazon CloudWatch Events) to filter AWS Config evaluation results based on the restricted-ssh rule and its compliance status (NON_COMPLIANT). An input transformer can be used to customize the information contained in the notification, such as the name and ID of the noncompliant security group. The EventBridge (CloudWatch Events) rule can then be configured to publish a notification to the SNS topic, which will notify the appropriate personnel in real-time.

Step A: Using a tool like CloudFormation resource import or IaC generator to scan and create a template from existing resources is efficient to bring current infrastructure under management.

Step C: Using CodeConnections (AWS's solution to connect Git repositories) with AWS CodePipeline ensures any changes to CloudFormation templates in the Git repo automatically deploy infrastructure changes, enforcing infrastructure as code workflows.

Step E: Creating an IAM role with CloudFormation as the principal ensures CloudFormation has permissions to manage resources. Using an SCP to deny all actions except by this role enforces strict control, preventing manual changes outside the pipeline.

Option B uses AWS Config which is more for compliance and auditing, not direct resource import. Option D is invalid because CloudFormation does not natively sync with Git; CodePipeline does. Option F is less secure than denying all except the IAM role.

AWS CloudFormation Resource Import:

'Import existing resources into CloudFormation stacks for management.'

(CloudFormation Resource Import)

AWS CodePipeline and CodeConnections Integration:

'Use CodeConnections to connect Git providers with AWS CodePipeline for continuous deployment.'

(AWS CodePipeline Git Integration)

AWS Organizations SCP and IAM Role Best Practices:

'Use SCPs to restrict actions and IAM roles with limited principals to enforce secure management.'

(AWS Organizations Best Practices)