VALID AWS-DEVOPS-ENGINEER-PROFESSIONAL TEST REGISTRATION | TEST AWS-DEVOPS-ENGINEER-PROFESSIONAL ENGINE VERSION

Valid AWS-DevOps-Engineer-Professional Test Registration | Test AWS-DevOps-Engineer-Professional Engine Version

Valid AWS-DevOps-Engineer-Professional Test Registration | Test AWS-DevOps-Engineer-Professional Engine Version

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Amazon AWS Certified DevOps Engineer - Professional Sample Questions (Q411-Q416):

NEW QUESTION # 411
You need to run a very large batch data processing job one time per day. The source data exists entirely in S3, and the output of the processing job should also be written to S3 when finished. If you need to version control this processing job and all setup and teardown logic for the system, what approach should you use?

  • A. Model an AWS EMR job in AWS Elastic Beanstalk.
  • B. Model an AWS EMR job in AWS CloudFormation.
  • C. Model an AWS EMR job in AWS OpsWorks.
  • D. Model an AWS EMR job in AWS CLI Composer.

Answer: B

Explanation:
To declaratively model build and destroy of a cluster, you need to use AWS CloudFormation.
OpsWorks and Elastic Beanstalk cannot directly model EMR Clusters. The CLI is not declarative, and CLI Composer does not exist.
http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-emr- cluster.html


NEW QUESTION # 412
A company runs a database on a single Amazon EC2 instance in a development environment.
The data is stored on separate Amazon EBS volumes that are attached to the EC2 instance. An Amazon Route 53 A record has been created and configured to point to the EC2 instance. The company would like to automate the recovery of the database instance when an instance or Availability Zone (AZ) fails. The company also wants to keep its costs low. The RTO is 4 hours and RPO is 12 hours. Which solution should a DevOps Engineer implement to meet these requirements?

  • A. Run the database in an Auto Scaling group with a minimum and maximum instance count of 1 in multiple AZs. Add a lifecycle hook to the Auto Scaling group and define an Amazon CloudWatch Events rule that is triggered when a lifecycle event occurs. Have the CloudWatch Events rule invoke an AWS Lambda function to detach or attach the Amazon EBS data volumes from the EC2 instance based on the event. Configure the EC2 instance UserData to mount the data volumes (retry on failure with a short delay), then start the database and update the Route 53 record.
  • B. Run the database in an Auto Scaling group with a minimum and maximum instance count of 1 in multiple AZs. Create an AWS Lambda function that is triggered by a scheduled Amazon CloudWatch Events rule every 4 hours to take a snapshot of the data volume and apply a tag.
    Have the instance UserData get the latest snapshot, create a new volume from it, and attach and mount the volume. Then start the database and update the Route 53 record.
  • C. Run the database on two separate EC2 instances in different AZs with one active and the other as a standby. Attach the data volumes to the active instance. Configure an Amazon CloudWatch Events rule to invoke an AWS Lambda function on EC2 instance termination. The Lambda function launches a replacement EC2 instance. If the terminated instance was the active node, then the function attaches the data volumes to the standby node. Start the database and update the Route 53 record.
  • D. Run the database on two separate EC2 instances in different AZs. Configure one of the instances as a master and the other as a standby. Set up replication between the master and standby instances. Point the Route 53 record to the master. Configure an Amazon CloudWatch Events rule to invoke an AWS Lambda function upon the EC2 instance termination. The Lambda function launches a replacement EC2 instance. If the terminated instance was the active node, the function promotes the standby to master and points the Route 53 record to it.

Answer: D


NEW QUESTION # 413
After a recent audit, a company decided to implement a new disaster recovery strategy for Its Amazon S3 data and its MySQL database running on Amazon EC2. Management wants the ability to recover to a secondary AWS Region with an RPO under 5 seconds and a RTO under 1 minute.
Which actions will meet the requirements while MINIMIZING operational overhead? (Select TWO.)

  • A. Migrate the database to Amazon RDS with a read replica in the secondary Region
  • B. Set up S3 cross-Region replication with a replication SLA for the S3 buckets where objects are being put.
  • C. Migrate the database to an Amazon Aurora multi-master in the primary and secondary Regions.
  • D. Migrate to Amazon Aurora Global Database.
  • E. Modify the application to write to both Regions at the same time when uploading objects to Amazon S3

Answer: B,E


NEW QUESTION # 414
You need to create a Route53 record automatically in CloudFormation when not running in production during all launches of a Template. How should you implement this?

  • A. Use a Parameterfor environment, and add a Condition on the Route53 Resource in the template to create the record with a null string when environment is production.
  • B. Use a Parameter for environment, and add a Condition on the Route53 Resource in the template to create the record only when environment is not production.
  • C. Create two templates, one with the Route53 record and one without it. Use the one without it when deploying to production.
  • D. Create two templates, one with the Route53 record value and one with a null value for the record. Use the one without it when deploying to production.

Answer: B

Explanation:
Explanation
The optional Conditions section includes statements that define when a resource is created or when a property is defined. For example, you can compare whether a value is equal to another value. Based on the result of that condition, you can conditionally create resources. If you have multiple conditions, separate them with commas.
You might use conditions when you want to reuse a template that can create resources in different contexts, such as a test environment versus a production environment In your template, you can add an Environ me ntType input parameter, which accepts either prod or test as inputs. For the production environment, you might include Amazon CC2 instances with certain capabilities; however, for the test environment, you want to use reduced capabilities to save money. With conditions, you can define which resources are created and how they're configured for each environment type.
For more information on Cloudformation conditions please refer to the below link:
* http://docs.ws.amazon.com/AWSCIoudFormation/latest/UserGuide/conditions-section-structure.htmI


NEW QUESTION # 415
You are responsible for an application that leverages the Amazon SDK and Amazon EC2 roles for storing and retrieving data from Amazon S3, accessing multiple DynamoDB tables, and exchanging message with Amazon SQS queues. Your VP of Compliance is concerned that you are not following security best practices for securing all of this access. He has asked you to verify that the application's AWS access keys are not older than six months and to provide control evidence that these keys will be rotated a minimum of once every six months.
Which option will provide your VP with the requested information?

  • A. Createa script to query the 1AM list-access keys API to get your application accesskey creation date and create a batch process to periodically create acompliance report for your VP.
  • B. Createa new set of instructions for your configuration management tool that willperiodically create and rotate the application's existing access keys andprovide a compliance report to your VP.
  • C. Updateyour application to log changes to its AWS access key credential file and use aperiodic Amazon EMR job to create a compliance report for your VP
  • D. Provideyour VP with a link to 1AM AWS documentation to address the VP's key rotationconcerns.

Answer: D

Explanation:
Explanation
The question is focusing on 1AM roles rather than using access keys for accessing the services, AWS will take care of the temporary credentials provided through the roles in accessing these services.


NEW QUESTION # 416
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