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Amazon DOP-C02 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Configuration Management and Infrastructure as Code	22%	- Design and implement configuration management 1. Implement parameter management (AWS Parameter Store, Secrets Manager) 2. Design patch management strategies 3. Implement AWS Systems Manager for configuration management - Design and implement data management strategies 1. Implement database migration strategies 2. Implement data lifecycle management 3. Design backup and recovery solutions - Implement compliance and configuration monitoring 1. Implement AWS CloudTrail for auditing 2. Use AWS Config for compliance monitoring 3. Design remediation automation - Design and implement infrastructure as code 1. Design for scalability and repeatability 2. Develop IaC templates (AWS CloudFormation, Terraform) 3. Implement modular and reusable infrastructure components
Topic 2: High Availability and Disaster Recovery	16%	- 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 - Design and implement disaster recovery strategies 1. Implement multi-region active-active architectures 2. Implement backup and restore mechanisms 3. Design RTO and RPO based DR solutions 4. Implement pilot light and warm standby architectures - Implement data backup and restore strategies 1. Implement validation testing for backups 2. Design point-in-time recovery solutions 3. Implement cross-region replication
Topic 3: Policies and Standards Automation	10%	- 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 - Design and implement governance strategies 1. Implement approval workflows and automation 2. Implement tagging policies and resource grouping 3. Design cost optimization through policies
Topic 4: SDLC Automation	22%	- 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 build and test environments 1. Integrate security scanning and compliance checks 2. Implement build environments (isolated, reproducible) 3. Design test automation frameworks - Design and implement CI/CD pipelines 1. Develop CI/CD pipelines considering testing and security requirements 2. Design failure handling strategies 3. Determine appropriate CI/CD pipeline architecture 4. Implement deployment strategies (blue-green, canary, rolling)
Topic 5: Incident and Event Response	18%	- 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 incident detection 2. Design event aggregation and correlation 3. Implement automated response playbooks
Topic 6: Monitoring and Logging	12%	- Design and implement alerting and incident management 1. Implement automated incident response 2. Create alarm notification strategies 3. Design runbook automation - Design and implement monitoring and observability strategies 1. Implement log aggregation and analysis 2. Implement distributed tracing (AWS X-Ray) 3. Design custom metrics and alarms (Amazon CloudWatch)

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Amazon AWS Certified DevOps Engineer - Professional Sample Questions (Q26-Q31):

NEW QUESTION # 26
A company uses AWS CloudFormation stacks to deploy updates to its application. The stacks consist of different resources. The resources include AWS Auto Scaling groups, Amazon EC2 instances, Application Load Balancers (ALBs), and other resources that are necessary to launch and maintain independent stacks.
Changes to application resources outside of CloudFormation stack updates are not allowed.
The company recently attempted to update the application stack by using the AWS CLI. The stack failed to update and produced the following error message: "ERROR: both the deployment and the CloudFormation stack rollback failed. The deployment failed because the following resource(s) failed to update:
[AutoScalingGroup]."
The stack remains in a status of UPDATE_ROLLBACK_FAILED. *
Which solution will resolve this issue?

A. Delete the Auto Scaling group resource. Run the aws cloudformation rollback-stack AWS CLI command.
B. Submit a request for a quota increase for the number of EC2 instances for the account. Run the aws cloudformation cancel-update-stack AWS CLI command.
C. Update the 1AM role by providing the necessary permissions to update the stack. Run the aws cloudformation continue-update-rollback AWS CLI command.
D. Update the subnet mappings that are configured for the ALBs. Run the aws cloudformation update- stack-set AWS CLI command.

Answer: C

Explanation:
https://repost.aws/knowledge-center/cloudformation-update-rollback-failed If your stack is stuck in the UPDATE_ROLLBACK_FAILED state after a failed update, then the only actions that you can perform on the stack are the ContinueUpdateRollback or DeleteStack operations.

NEW QUESTION # 27
A security team is concerned that a developer can unintentionally attach an Elastic IP address to an Amazon EC2 instance in production. No developer should be allowed to attach an Elastic IP address to an instance. The security team must be notified if any production server has an Elastic IP address at any time How can this task be automated'?

A. Create an AWS Config rule to check that all production instances have EC2 1AM roles that include deny associate-address permissions Verify whether there is an Elastic IP address associated with any instance, and alert the security team if an instance has an Elastic IP address associated with it.
B. Use Amazon Athena to query AWS CloudTrail logs to check for any associate-address attempts Create an AWS Lambda function to disassociate the Elastic IP address from the instance, and alert the security team.
C. Attach an 1AM policy to the developers' 1AM group to deny associate-address permissions Create a custom AWS Config rule to check whether an Elastic IP address is associated with any instance tagged as production, and alert the security team
D. Ensure that all 1AM groups associated with developers do not have associate-address permissions. Create a scheduled AWS Lambda function to check whether an Elastic IP address is associated with any instance tagged as production, and alert the secunty team if an instance has an Elastic IP address associated with it

Answer: C

Explanation:
To prevent developers from unintentionally attaching an Elastic IP address to an Amazon EC2 instance in production, the best approach is to use IAM policies and AWS Config rules. By attaching an IAM policy that denies the associate-address permission to the developers' IAM group, you ensure that developers cannot perform this action. Additionally, creating a custom AWS Config rule to check for Elastic IP addresses associated with instances tagged as production provides ongoing monitoring. If the rule detects an Elastic IP address, it can trigger an alert to notify the security team. This method is proactive and enforces the necessary permissions while also providing a mechanism for detection and notification. References: from Amazon DevOps sources

NEW QUESTION # 28
A company uses an organization in AWS Organizations to manage multiple AWS accounts The company needs an automated process across all AWS accounts to isolate any compromised Amazon EC2 instances when the instances receive a specific tag.
Which combination of steps will meet these requirements? (Select TWO.)

A. Use AWS Cloud Formation StackSets to deploy the Cloud Formation stacks in all AWS accounts.
B. Create an AWS Cloud Formation template that creates an EC2 instance role that has no 1AM policies attached. Configure the template to have a security group that has no inbound rules or outbound rules. Use the CloudFormation template to create an AWS Lambda function that attaches the 1AM role to instances. Configure the Lambda function to replace any existing security groups with the new security group. Set up an Amazon EventBridge rule to invoke the Lambda function when a specific tag is applied to a compromised EC2 instance.
C. Create an SCP that has a Deny statement for the ec2:" action with a condition of "aws:RequestTag/isolation": false.
D. Create an AWS Cloud Formation template that creates an EC2 instance rote that has no 1AM policies attached. Configure the template to have a security group that has an explicit Deny rule on all traffic. Use the Cloud Formation template to create an AWS Lambda function that attaches the 1AM role to instances. Configure the Lambda function to add a network ACL. Sot up an Amazon EventBridge rule to invoke the Lambda function when a specific tag is applied to a compromised EC2 instance.
E. Attach the SCP to the root of the organization.

Answer: A,B

Explanation:
* Step 1: Deploy the Automation Solution using CloudFormation StackSets To automate the process across multiple AWS accounts within an organization, you can use AWS CloudFormation StackSets. StackSets allow you to deploy CloudFormation templates to multiple accounts within an organization, ensuring consistent infrastructure and automation.
Action: Use AWS CloudFormation StackSets to deploy the necessary resources across all AWS accounts. This includes deploying the Lambda function and security groups that will isolate compromised EC2 instances.
Why: StackSets make it easy to deploy and manage resources across multiple AWS accounts, reducing the operational overhead.
Reference:
This corresponds to Option A: Use AWS CloudFormation StackSets to deploy the CloudFormation stacks in all AWS accounts.
* Step 2: Isolate EC2 Instances using Lambda and Security Groups
When an EC2 instance is compromised, it needs to be isolated from the network. This can be done by creating a security group with no inbound or outbound rules and attaching it to the instance. A Lambda function can handle this process and can be triggered automatically by an Amazon EventBridge rule when a specific tag (e.g., "isolation") is applied to the compromised instance.
Action: Create a Lambda function that attaches an isolated security group (with no inbound or outbound rules) to the compromised EC2 instances. Set up an EventBridge rule to trigger the Lambda function when the "isolation" tag is applied to the instance.
Why: This automates the isolation process, ensuring that any compromised instances are immediately cut off from the network, reducing the potential damage from the compromise.
This corresponds to Option E: Create an AWS CloudFormation template that creates an EC2 instance role that has no IAM policies attached. Configure the template to have a security group that has no inbound rules or outbound rules. Use the CloudFormation template to create an AWS Lambda function that attaches the IAM role to instances. Configure the Lambda function to replace any existing security groups with the new security group. Set up an Amazon EventBridge rule to invoke the Lambda function when a specific tag is applied to a compromised EC2 instance.

NEW QUESTION # 29
A company is implementing AWS CodePipeline to automate its testing process The company wants to be notified when the execution state fails and used the following custom event pattern in Amazon EventBridge:

Which type of events will match this event pattern?

A. Approval actions across all the pipelines
B. All rejected or failed approval actions across all the pipelines
C. All the events across all pipelines
D. Failed deploy and build actions across all the pipelines

Answer: B

Explanation:
Explanation
Action-level states in events
Action state Description
STARTED The action is currently running.
SUCCEEDED The action was completed successfully.
FAILED For Approval actions, the FAILED state means the action was either rejected by the reviewer or failed due to an incorrect action configuration.
CANCELED The action was canceled because the pipeline structure was updated.

NEW QUESTION # 30
A DevOps team incorporates automatic load and stress testing capabilities into a CI/CD pipeline by using AWS CodeBuild. The DevOps team uses an Amazon Aurora MySQL DB cluster in a testing environment to perform load testing. The DevOps team set the minimum capacity for the testing DB cluster to 1. The DevOps team uses 10 DB clusters in a production environment. The DevOps team has set all the DB clusters to automatically scale up to a maximum capacity of 15 Aurora Replicas.
When the DevOps team performs load testing, the configuration of the Aurora DB cluster in the testing environment prevents the cluster from scaling rapidly enough to meet the transient demand, which causes load testing to fail.
The DevOps team must configure the DB cluster in the testing environment to meet the load-testing demand.
Which solution will meet this requirement MOST cost-effectively?

A. Set the minimum capacity to 10 in the PRE_BUILD phase of the CodeBuild configuration. Reset the capacity to 1 in the POST_BUILD phase.
B. Set the minimum capacity to 10 in the POST_BUILD phase of the CodeBuild configuration. Reset the capacity to 1 in the same POST_BUILD phase.
C. Set the minimum capacity to 10. Reduce the scale-in cooldown period in the PRE_BUILD phase of the CodeBuild configuration.
D. Add an Amazon RDS Proxy in front of the testing Aurora DB cluster. Set the RDS Proxy endpoint in the PRE_BUILD phase of the CodeBuild configuration.

Answer: A

Explanation:
The failure occurs because the test Aurora cluster starts with too little minimum replica capacity and cannot scale out fast enough for short-lived load testing. Aurora Auto Scaling uses minimum and maximum capacity values for the DB cluster, and scale-out and scale-in behavior is controlled by cooldown behavior. Raising the minimum capacity before the load test pre-warms the cluster with enough Aurora Replicas to absorb the transient load. Resetting the minimum back to 1 in POST_BUILD keeps the solution cost-effective after testing finishes. Option A does not reset capacity and changes scale-in behavior rather than fixing pre-test scale-out lag. Option C changes capacity after the test, which is too late. RDS Proxy manages connections, not Aurora replica scale-out capacity.

NEW QUESTION # 31
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