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The Amazon DOP-C02 exam measures the candidate's proficiency in various aspects of DevOps, such as continuous integration and delivery, infrastructure automation, monitoring and logging, security and compliance, and troubleshooting. DOP-C02 Exam is designed for experienced DevOps professionals who have a deep understanding of AWS services and are familiar with DevOps practices and tools.

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Amazon DOP-C02 Certification Exam is designed to test an individual's ability to implement and manage a DevOps environment on the AWS platform. This includes designing and implementing continuous delivery systems, continuous integration, and continuous deployment systems. It also measures an individual's knowledge of monitoring, logging, and metrics systems on the AWS platform, as well as their ability to implement and manage security and compliance policies.

Amazon AWS Certified DevOps Engineer - Professional Sample Questions (Q252-Q257):

NEW QUESTION # 252
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.)

A. Create a VPC peering connection to connect Account A to Account B.
B. Create SCPs to set permission guardrails with fine-grained control for Amazon EFS.
C. Configure the Lambda functions in Account B to assume an existing IAM role in Account A.
D. Update the Lambda execution roles with permission to access the VPC and the EFS file system.
E. Create a new EFS file system in Account B Use AWS Database Migration Service (AWS DMS) to keep data from Account A and Account B synchronized.
F. Update the EFS file system policy to provide Account B with access to mount and write to the EFS file system in Account A.

Answer: A,C,F

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 # 253
A DevOps engineer is creating an AWS CloudFormation template to deploy a web service. The web service will run on Amazon EC2 instances in a private subnet behind an Application Load Balancer (ALB). The DevOps engineer must ensure that the service can accept requests from clients that have IPv6 addresses.
What should the DevOps engineer do with the CloudFormation template so that IPv6 clients can access the web service?

A. Add an IPv6 CIDR block to the VPC and the private subnet for the EC2 instances. Create route table entries for the IPv6 network, use EC2 instance types that support IPv6, and assign IPv6 addresses to each EC2 instance.
B. Assign each EC2 instance an IPv6 Elastic IP address. Create a target group, and add the EC2 instances as targets. Create a listener on port 443 of the ALB, and associate the target group with the ALB.
C. Add an IPv6 CIDR block to the VPC and subnets for the ALB. Create a listener on port 443. and specify the dualstack IP address type on the ALB. Create a target group, and add the EC2 instances as targets. Associate the target group with the ALB.
D. Replace the ALB with a Network Load Balancer (NLB). Add an IPv6 CIDR block to the VPC and subnets for the NLB, and assign the NLB an IPv6 Elastic IP address.

Answer: B

NEW QUESTION # 254
A company runs hundreds of EC2 instances with new instances launched/terminated hourly. Security requires all running instances to have an instance profile attached. A default profile exists and must be attached automatically to any instance missing one.
Which solution meets this requirement?

A. AWS Config iam-role-managed-policy-check managed rule, automatic remediation with Lambda to attach profile.
B. EventBridge rule for RunInstances API calls, invoke Lambda to attach default profile.
C. EventBridge rule for StartInstances API calls, invoke Systems Manager Automation runbook to attach profile.
D. AWS Config with ec2-instance-profile-attached managed rule, automatic remediation using Systems Manager Automation runbook to attach profile.

Answer: D

Explanation:
* AWS Config'sec2-instance-profile-attachedmanaged rule checks for attached instance profiles.
* Config supportsautomatic remediationvia Systems Manager Automation runbooks.
* This provides continuous compliance with minimal operational overhead.
* EventBridge and Lambda (A) require custom coding and risk missing existing instances.
* StartInstances (C) does not cover RunInstances and new instances.
* IAM-role managed policy check (D) does not check instance profile attachments.
References:
AWS Config Managed Rules
Config Automatic Remediation

NEW QUESTION # 255
A company uses an organization in AWS Organizations that has all features enabled to manage multiple AWS accounts. The company has enabled AWS Config in all accounts. The company requires developers to create AWS CloudFormation stacks in a new AWS account to test features for a new application that the developers are building.
The company wants to ensure that the developers can use only approved Amazon EC2 instance types for the application.
Which solution will meet these requirements?

A. Create an AWS Config rule that uses the desired-instance-type rule in the new AWS account. Provide the list of approved instance types in the rule configuration. Create a remediation for the AWS Config rule that uses the AWS-StopEC2Instance remediation action.
B. Create an AWS Lambda function that returns SUCCESS when the EC2 instance type property matches a value from a list of approved instance types. Activate a CloudFormation Guard Hook in the new AWS account to run the Lambda function.
C. Create a CloudFormation Guard rule to ensure that the EC2 instance type matches a value from a list of approved instance types. Activate a Guard Hook in the new AWS account to run the Guard rule.
D. Create an SCP that includes a Deny effect for ec2:RunInstances when the ec2:InstanceType property does not match a value from a list of approved instance types. Attach the SCP to the root of the organization.

Answer: C

Explanation:
The key requirement is to prevent non-approved EC2 instance types from being created at stack creation time, specifically when developers deploy AWS CloudFormation stacks. This is a pre-deployment enforcement requirement, not a detection or remediation requirement after resources already exist.
CloudFormation Guard Hooks are purpose-built for this use case. They allow organizations to define policy- as-code rules that validate CloudFormation templates before resources are created or updated. By writing a CloudFormation Guard rule that explicitly checks the InstanceType property against an approved allow list, the stack operation will fail immediately if a developer attempts to use a disallowed instance type. This enforces compliance early in the deployment lifecycle and avoids post-deployment cleanup.
Option B uses AWS Config, which only detects noncompliance after resources are created. Even with remediation, the instance would still be launched briefly, which violates the requirement. Option C uses an SCP, which applies broadly to all EC2 launches in the organization and is not limited to CloudFormation stacks; this is overly restrictive and could unintentionally block other valid use cases. Option A incorrectly combines Lambda with Guard Hooks-Guard Hooks natively evaluate Guard rules and do not invoke Lambda functions.
Therefore, using a CloudFormation Guard rule with a Guard Hook is the correct and AWS-recommended solution for enforcing approved EC2 instance types during CloudFormation deployments.

NEW QUESTION # 256
A company manages an application that stores logs in Amazon CloudWatch Logs. The company wants to archive the logs to an Amazon S3 bucket. Logs are rarely accessed after 90 days and must be retained for 10 years.
Which combination of steps should a DevOps engineer take to meet these requirements? (Select TWO.)

A. Configure a CloudWatch Logs subscription filter to use Amazon Data Firehose to stream all logs to an S3 bucket.
B. Configure a CloudWatch Logs subscription filter to use AWS Glue to transfer all logs to an S3 bucket.
C. Configure the S3 bucket lifecycle policy to transition logs to S3 Glacier Instant Retrieval after 90 days and to expire logs after 3,650 days.
D. Configure the S3 bucket lifecycle policy to transition logs to Reduced Redundancy after 90 days and to expire logs after 3,650 days.
E. Configure a CloudWatch Logs subscription filter to stream all logs to an S3 bucket.

Answer: A,C

Explanation:
To archive CloudWatch Logs to S3 with long-term retention, you need:
* a streaming mechanism to move data from CloudWatch Logs to S3, and
* an S3 Lifecycle policy to handle tiering and expiration.
Option B uses a CloudWatch Logs subscription filter that targets Amazon Data Firehose. Firehose provides managed, scalable streaming from CloudWatch Logs to S3 with optional buffering and transformation. This is the AWS-recommended pattern for exporting continuous log streams with minimal operational overhead.
Option C is not valid because CloudWatch Logs subscription filters cannot directly target S3; they must target Kinesis, Firehose, or Lambda.
Once logs are in S3, the company wants to keep them rarely accessed after 90 days and retained for 10 years.
Option D configures an S3 lifecycle policy to transition logs to S3 Glacier Instant Retrieval after 90 days, which is a low-cost archival tier with relatively fast access, and to expire (delete) logs after 3,650 days (10 years). This precisely matches the retention requirement.
Option E uses Reduced Redundancy, which is a legacy storage class and not optimized for long-term archival.
Therefore, the correct combination is B and D.

NEW QUESTION # 257
......

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