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Amazon DOP-C02 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: High Availability and Disaster Recovery16%- Design and implement disaster recovery strategies
  • 1. Implement multi-region active-active architectures
  • 2. Implement pilot light and warm standby architectures
  • 3. Implement backup and restore mechanisms
  • 4. Design RTO and RPO based DR solutions
- Implement data backup and restore strategies
  • 1. Implement cross-region replication
  • 2. Implement validation testing for backups
  • 3. Design point-in-time recovery solutions
- Design and implement high availability and scalability
  • 1. Implement auto scaling strategies
  • 2. Design multi-AZ and multi-region architectures
  • 3. Implement load balancing and traffic management
Topic 2: Monitoring and Logging12%- Design and implement alerting and incident management
  • 1. Create alarm notification strategies
  • 2. Design runbook automation
  • 3. Implement automated incident response
- Design and implement monitoring and observability strategies
  • 1. Implement log aggregation and analysis
  • 2. Design custom metrics and alarms (Amazon CloudWatch)
  • 3. Implement distributed tracing (AWS X-Ray)
Topic 3: Policies and Standards Automation10%- Design and implement governance strategies
  • 1. Design cost optimization through policies
  • 2. Implement approval workflows and automation
  • 3. Implement tagging policies and resource grouping
- Design and implement preventive and detective controls
  • 1. Design and implement security baselines
  • 2. Implement AWS Organizations and SCPs
  • 3. Implement drift detection and remediation
Topic 4: SDLC Automation22%- Design build and test environments
  • 1. Design test automation frameworks
  • 2. Integrate security scanning and compliance checks
  • 3. Implement build environments (isolated, reproducible)
- Design and implement source code management strategies
  • 1. Determine branching strategies
  • 2. Implement repository configurations and hooks
  • 3. Design code review and approval processes
- Design and implement CI/CD pipelines
  • 1. Develop CI/CD pipelines considering testing and security requirements
  • 2. Implement deployment strategies (blue-green, canary, rolling)
  • 3. Determine appropriate CI/CD pipeline architecture
  • 4. Design failure handling strategies
Topic 5: Configuration Management and Infrastructure as Code22%- Implement compliance and configuration monitoring
  • 1. Implement AWS CloudTrail for auditing
  • 2. Design remediation automation
  • 3. Use AWS Config for compliance monitoring
- Design and implement configuration management
  • 1. Implement AWS Systems Manager for configuration management
  • 2. Design patch management strategies
  • 3. Implement parameter management (AWS Parameter Store, Secrets Manager)
- Design and implement data management strategies
  • 1. Implement database migration strategies
  • 2. Design backup and recovery solutions
  • 3. Implement data lifecycle management
- Design and implement infrastructure as code
  • 1. Design for scalability and repeatability
  • 2. Implement modular and reusable infrastructure components
  • 3. Develop IaC templates (AWS CloudFormation, Terraform)
Topic 6: Incident and Event Response18%- Design and implement chaos engineering practices
  • 1. Analyze system behavior under failure conditions
  • 2. Implement fault injection experiments (AWS Fault Injection Simulator)
  • 3. Design resilience testing strategies
- Design and implement event and incident management
  • 1. Implement automated response playbooks
  • 2. Implement automated incident detection
  • 3. Design event aggregation and correlation

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Amazon AWS Certified DevOps Engineer - Professional Sample Questions (Q418-Q423):

NEW QUESTION # 418
A company's organization in AWS Organizations has a single OU. The company runs Amazon EC2 instances in the OU accounts. The company needs to limit the use of each EC2 instance's credentials to the specific EC2 instance that the credential is assigned to. A DevOps engineer must configure security for the EC2 instances.
Which solution will meet these requirements?

Answer: C

Explanation:
Step 1: Using Service Control Policies (SCPs) for EC2 Security
To limit the use of EC2 instance credentials to the specific EC2 instance they are assigned to, you can create a Service Control Policy (SCP) that verifies specific conditions, such as whether the EC2 instance's source VPC and private IP match expected values.
Action: Create an SCP that checks whether the values of the aws:EC2InstanceSourceVPC and aws:SourceVpc condition keys are the same. Deny access if they are not.
Why: This ensures that credentials cannot be used outside the designated EC2 instance or VPC.
Step 2: Further Validation with Private IPs
The SCP should also verify that the EC2 instance's private IP matches the IP range specified for the VPC. If the instance's private IP does not match, access should be denied.
Action: In the same SCP, check whether the values of the aws:EC2InstanceSourcePrivateIP and aws:VpcSourceIP condition keys are the same. Deny access if they are not.
Why: This ensures that the credentials are only used within the specific EC2 instance and its associated VPC.
Reference:
This corresponds to Option B: Create an SCP that checks whether the values of the aws:EC2InstanceSourceVPC and aws:SourceVpc condition keys are the same. Deny access if the values are not the same. In the same SCP check, check whether the values of the aws:EC2InstanceSourcePrivateIP and aws:VpcSourceIP condition keys are the same. Deny access if the values are not the same. Apply the SCP to the OU.


NEW QUESTION # 419
A company is using an organization in AWS Organizations to manage multiple AWS accounts. The company's development team wants to use AWS Lambda functions to meet resiliency requirements and is rewriting all applications to work with Lambda functions that are deployed in a VPC. The development team is using Amazon Elastic Pile System (Amazon EFS) as shared storage in Account A in the organization.
The company wants to continue to use Amazon EPS with Lambda Company policy requires all serverless projects to be deployed in Account B.
A DevOps engineer needs to reconfigure an existing EFS file system to allow Lambda functions to access the data through an existing EPS access point.
Which combination of steps should the DevOps engineer take to meet these requirements? (Select THREE.)

Answer: A,C,D

Explanation:
A Lambda function in one account can mount a file system in a different account. For this scenario, you configure VPC peering between the function VPC and the file system VPC. https://docs.aws.amazon.com/lambda/latest/dg/services-efs.html
https://aws.amazon.com/ru/blogs/storage/mount-amazon-efs-file-systems-cross-account-from-amazon-eks/
1. Need to update the file system policy on EFS to allow mounting the file system into Account B.
## File System Policy
$ cat file-system-policy.json
{
"Statement": [
{
"Effect": "Allow",
"Action": [
"elasticfilesystem:ClientMount",
"elasticfilesystem:ClientWrite"
],
"Principal": {
"AWS": "arn:aws:iam::<aws-account-id-A>:root" # Replace with AWS account ID of EKS cluster
}
}
]
}
2. Need VPC peering between Account A and Account B as the pre-requisite
3. Need to assume cross-account IAM role to describe the mounts so that a specific mount can be chosen.


NEW QUESTION # 420
To run an application, a DevOps engineer launches an Amazon EC2 instance with public IP addresses in a public subnet. A user data script obtains the application artifacts and installs them on the instances upon launch. A change to the security classification of the application now requires the instances to run with no access to the internet. While the instances launch successfully and show as healthy, the application does not seem to be installed.
Which of the following should successfully install the application while complying with the new rule?

Answer: A

Explanation:
Explanation
EC2 instances running in private subnets of a VPC can now have controlled access to S3 buckets, objects, and API functions that are in the same region as the VPC. You can use an S3 bucket policy to indicate which VPCs and which VPC Endpoints have access to your S3 buckets 1-
https://aws.amazon.com/pt/blogs/aws/new-vpc-endpoint-for-amazon-s3/


NEW QUESTION # 421
AnyCompany is using AWS Organizations to create and manage multiple AWS accounts AnyCompany recently acquired a smaller company, Example Corp. During the acquisition process, Example Corp's single AWS account joined AnyCompany's management account through an Organizations invitation. AnyCompany moved the new member account under an OU that is dedicated to Example Corp.
AnyCompany's DevOps eng*neer has an IAM user that assumes a role that is named OrganizationAccountAccessRole to access member accounts. This role is configured with a full access policy When the DevOps engineer tries to use the AWS Management Console to assume the role in Example Corp's new member account, the DevOps engineer receives the following error message "Invalid information in one or more fields. Check your information or contact your administrator." Which solution will give the DevOps engineer access to the new member account?

Answer: A

Explanation:
The problem is that the DevOps engineer cannot assume the OrganizationAccountAccessRole IAM role in the new member account that joined AnyCompany's management account through an Organizations invitation. The solution is to create a new IAM role with the same name and trust policy in the new member account.
Option A is incorrect, as it does not address the root cause of the error. The DevOps engineer's IAM user already has permission to assume the OrganizationAccountAccessRole IAM role in any member account, as this is the default role name that AWS Organizations creates when a new account joins an organization. The error occurs because the new member account does not have this role, as it was not created by AWS Organizations.
Option B is incorrect, as it does not address the root cause of the error. An SCP is a policy that defines the maximum permissions for account members of an organization or organizational unit (OU). An SCP does not grant permissions to IAM users or roles, but rather limits the permissions that identity-based policies or resource-based policies grant to them. An SCP also does not affect how IAM roles are assumed by other principals.
Option C is correct, as it addresses the root cause of the error. By creating a new IAM role with the same name and trust policy as the OrganizationAccountAccessRole IAM role in the new member account, the DevOps engineer can assume this role and access the account. The new role should have the AdministratorAccess AWS managed policy attached, which grants full access to all AWS resources in the account. The trust policy should allow the management account to assume the role, which can be done by specifying the management account ID as a principal in the policy statement.
Option D is incorrect, as it assumes that the new member account already has the OrganizationAccountAccessRole IAM role, which is not true. The new member account does not have this role, as it was not created by AWS Organizations. Editing the trust policy of a non-existent role will not solve the problem.


NEW QUESTION # 422
A DevOps engineer is using AWS CodeDeploy across a fleet of Amazon EC2 instances in an EC2 Auto Scaling group. The associated CodeDeploy deployment group, which is integrated with EC2 Auto Scaling, is configured to perform in-place deployments with codeDeployDefault.oneAtATime During an ongoing new deployment, the engineer discovers that, although the overall deployment finished successfully, two out of five instances have the previous application revision deployed. The other three instances have the newest application revision What is likely causing this issue?

Answer: C

Explanation:
When AWS CodeDeploy performs an in-place deployment, it updates the instances with the new application revision one at a time, as specified by the deployment configuration codeDeployDefault.oneAtATime. If a lifecycle event hook, such as AfterInstall, fails during the deployment, CodeDeploy will attempt to roll back to the previous version on the affected instances. This is likely what happened with the two instances that still have the previous application revision deployed. The failure of the AfterInstall lifecycle event hook triggered the rollback mechanism, resulting in those instances reverting to the previous application revision.
Reference:
AWS CodeDeploy documentation on redeployment and rollback procedures1.
Stack Overflow discussions on re-deploying older revisions with AWS CodeDeploy2.
AWS CLI reference guide for deploying a revision2.


NEW QUESTION # 423
......

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