DOP-C02 TESTKING & PREMIUM DOP-C02 FILES

DOP-C02 Testking & Premium DOP-C02 Files

DOP-C02 Testking & Premium DOP-C02 Files

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Amazon AWS Certified DevOps Engineer - Professional Sample Questions (Q165-Q170):

NEW QUESTION # 165
A company has an application that runs on Amazon EC2 instances behind an Application Load Balancer (ALB) The EC2 Instances are in multiple Availability Zones The application was misconfigured in a single Availability Zone, which caused a partial outage of the application.
A DevOps engineer made changes to ensure that the unhealthy EC2 instances in one Availability Zone do not affect the healthy EC2 instances in the other Availability Zones. The DevOps engineer needs to test the application's failover and shift where the ALB sends traffic During failover. the ALB must avoid sending traffic to the Availability Zone where the failure has occurred.
Which solution will meet these requirements?

  • A. Create an Amazon Route 53 Application Recovery Controller resource set that uses the ARN of the ALB's target group Create a readiness check that uses the ElbV2TargetGroupsCanServeTraffic rule
  • B. Turn off cross-zone load balancing on the ALB's target group Use Amazon Route 53 Application Recovery Controller to start a zonal shift away from the Availability Zone
  • C. Create an Amazon Route 53 Application Recovery Controller resource set that uses the DNS hostname of the ALB Start a zonal shift for the resource set away from the Availability Zone
  • D. Turn off cross-zone load balancing on the ALB Use Amazon Route 53 Application Recovery Controller to start a zonal shift away from the Availability Zone

Answer: B

Explanation:
* Turn off cross-zone load balancing on the ALB's target group:
Cross-zone load balancing distributes traffic evenly across all registered targets in all enabled Availability Zones. Turning this off will ensure that each target group only handles requests from its respective Availability Zone.
To disable cross-zone load balancing:
Go to the Amazon EC2 console.
Navigate to Load Balancers and select the ALB.
Choose the Target Groups tab, select the target group, and then select the Group details tab.
Click on Edit and turn off Cross-zone load balancing.
* Use Amazon Route 53 Application Recovery Controller to start a zonal shift away from the Availability Zone:
Amazon Route 53 Application Recovery Controller provides the ability to control traffic flow to ensure high availability and disaster recovery.
By using Route 53 Application Recovery Controller, you can perform a zonal shift to redirect traffic away from the unhealthy Availability Zone.
To start a zonal shift:
Configure Route 53 Application Recovery Controller by creating a cluster and control panel.
Create routing controls to manage traffic shifts between Availability Zones.
Use the routing control to shift traffic away from the affected Availability Zone.
Reference:
Disabling cross-zone load balancing
Route 53 Application Recovery Controller


NEW QUESTION # 166
A company's DevOps engineer uses AWS Systems Manager to perform maintenance tasks during maintenance windows. The company has a few Amazon EC2 instances that require a restart after notifications from AWS Health. The DevOps engineer needs to implement an automated solution to remediate these notifications. The DevOps engineer creates an Amazon EventBridge rule.
How should the DevOps engineer configure the EventBridge rule to meet these requirements?

  • A. Configure an event source of EC2 and an event type that indicates instance maintenance. Target a newly created AWS Lambda function that registers an automation task to restart the EC2 instance during a maintenance window.
  • B. Configure an event source of AWS Health, a service of EC2. and an event type that indicates instance maintenance. Target a Systems Manager document to restart the EC2 instance.
  • C. Configure an event source of AWS Health, a service of EC2, and an event type that indicates instance maintenance. Target a newly created AWS Lambda function that registers an automation task to restart the EC2 instance during a maintenance window.
  • D. Configure an event source of Systems Manager and an event type that indicates a maintenance window.
    Target a Systems Manager document to restart the EC2 instance.

Answer: C

Explanation:
Explanation
AWS Health provides real-time events and information related to your AWS infrastructure. It can be integrated with Amazon EventBridge to act upon the health events automatically. If the maintenance notification from AWS Health indicates that an EC2 instance requires a restart, you can set up an EventBridge rule to respond to such events. In this case, the target of this rule would be a Lambda function that would trigger a Systems Manager automation to restart the EC2 instance during a maintenance window. Remember, AWS Health is the source of the events (not EC2 or Systems Manager), and AWS Lambda can be used to execute complex remediation tasks, such as scheduling maintenance tasks via Systems Manager.
The following are the steps involved in configuring the EventBridge rule to meet these requirements:
Configure an event source of AWS Health, a service of EC2, and an event type that indicates instance maintenance.
Target a newly created AWS Lambda function that registers an automation task to restart the EC2 instance during a maintenance window.
The AWS Lambda function will be triggered by the event from AWS Health. The function will then register an automation task to restart the EC2 instance during the next maintenance window.


NEW QUESTION # 167
A DevOps engineer is building a multistage pipeline with AWS CodePipeline to build, verify, stage, test, and deploy an application. A manual approval stage is required between the test stage and the deploy stage. The development team uses a custom chat tool with webhook support that requires near-real-time notifications.
How should the DevOps engineer configure status updates for pipeline activity and approval requests to post to the chat tool?

  • A. Create an Amazon EventBridge rule that filters on CodePipeline Pipeline Execution State Change.
    Publish the events to an Amazon Simple Notification Service (Amazon SNS) topic. Create an AWS Lambda function that sends event details to the chat webhook URL. Subscribe the function to the SNS topic.
  • B. Modify the pipeline code to send the event details to the chat webhook URL at the end of each stage.Parameterize the URL so that each pipeline can send to a different URL based on the pipeline environment.
  • C. Create an Amazon CloudWatch Logs subscription that filters on CodePipeline Pipeline Execution State Change. Publish subscription events to an Amazon Simple Notification Service (Amazon SNS) topic.
    Subscribe the chat webhook URL to the SNS topic, and complete the subscription validation.
  • D. Create an AWS Lambda function that is invoked by AWS CloudTrail events. When a CodePipeline Pipeline Execution State Change event is detected, send the event details to the chat webhook URL.

Answer: A

Explanation:
https://aws.amazon.com/premiumsupport/knowledge-center/sns-lambda-webhooks-chime-slack-teams/


NEW QUESTION # 168
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?

  • A. Launch the instances in a public subnet with Elastic IP addresses attached. Once the application is installed and running, run a script to disassociate the Elastic IP addresses afterwards.
  • B. Publish the application artifacts to an Amazon S3 bucket and create a VPC endpoint for S3. Assign an IAM instance profile to the EC2 instances so they can read the application artifacts from the S3 bucket.
  • C. Create a security group for the application instances and allow only outbound traffic to the artifact repository. Remove the security group rule once the install is complete.
  • D. Set up a NAT gateway. Deploy the EC2 instances to a private subnet. Update the private subnet's route table to use the NAT gateway as the default route.

Answer: B

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 # 169
A company uses Amazon S3 to store proprietary information. The development team creates buckets for new projects on a daily basis. The security team wants to ensure that all existing and future buckets have encryption logging and versioning enabled. Additionally, no buckets should ever be publicly read or write accessible.
What should a DevOps engineer do to meet these requirements?

  • A. Enable AWS Conflg rules and configure automatic remediation using AWS Systems Manager documents.
  • B. Enable AWS Systems Manager and configure automatic remediation using Systems Manager documents.
  • C. Enable AWS Trusted Advisor and configure automatic remediation using Amazon EventBridge.
  • D. Enable AWS CloudTrail and configure automatic remediation using AWS Lambda.

Answer: A

Explanation:
https://aws.amazon.com/blogs/mt/aws-config-auto-remediation-s3-compliance/ https://aws.amazon.com/blogs/aws/aws-config-rules-dynamic-compliance-checking-for-cloud-resources/


NEW QUESTION # 170
......

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