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Note! DOP-C01 has been withdrawn. The new exam code is DOP-C02

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DOP-C01 Questions and Answers

Question # 1

A company needs to introduce automatic DNS failover for a distributed web application to a disaster recovery or standby installation. The DevOps Engineer plans to configure Amazon Route 53 to provide DNS routing to alternate endpoint in the event of an application failure.

What steps should the Engineer take to accomplish this? (Select TWO.)

A.

Create Amazon Route 53 health checks for each endpoint that cannot be entered as alias records. Ensure firewall and routing rules allow Amazon Route 53 to send requests to the endpoints that are specified in the health checks.

B.

Create alias records that route traffic to AWS resources and set the value of the Evaluate Target Health option to Yes, then create all the non-alias records.

C.

Create a governing Amazon Route 53 record set, set it to failover, and associate it with the primary and secondary Amazon Route 53 record sets to distribute traffic to healthy DNS entries.

D.

Create an Amazon CloudWatch alarm to monitor the primary Amazon Route 53 DNS entry. Then create an associated AWS Lambda function to execute the failover API call to Route 53 to the secondary DNS entry.

Question # 2

A DevOps engineer is using AWS CodeBuild. AWS CodeDeploy. and Amazon S3 to build a centralized CI/CD pipeline. The DevOps engineer must implement least privilege access and encryption at rest for all artifacts in Amazon S3. The DevOps engineer must be able to prune old artifacts without having the ability to download or read them.

The DevOps engineer already has completed the following steps

1. Create a unique AWS Key Management Service (AWS KMS) CMK and S3 bucket for each project's builds 2 Update the S3 bucket policy to only allow uploads that use the associated KMS encryption

Which final step should the DevOps engineer take to meet these requirements?

A.

Update the attached IAM policies to allow access to the appropriate KMS key from the CodeDeploy role where the application will be deployed.

B.

Update the attached IAM policies to allow access to the appropriate KMS key from the EC2 instance roles where the application will be deployed

C.

Update the CMK's key policy to allow access to the appropriate KMS key from the CodeDeploy role where the application will be deployed.

D.

Update the CMK's key policy to allow access to the appropriate KMS key from the EC2 instance roles where the application will be deployed

Question # 3

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.

Modify the application to write to both Regions at the same time when uploading objects to Amazon S3

B.

Migrate the database to an Amazon Aurora multi-master in the primary and secondary Regions.

C.

Migrate the database to Amazon RDS with a read replica in the secondary Region

D.

Migrate to Amazon Aurora Global Database.

E.

Set up S3 cross-Region replication with a replication SLA for the S3 buckets where objects are being put.

Question # 4

A social networking service runs a web API that allows its partners to search public posts. Post data is stored in Amazon DynamoDB and indexed by AWS

Lambda functions, with an Amazon ES domain storing the indexes and providing search functionality to the application.

The service needs to maintain full capacity during deployments and ensure that failed deployments do not cause downtime or reduced capacity, or prevent subsequent deployments.

How can these requirements be met? (Select TWO )

A.

Run the web application in AWS Elastic Beanstalk with the deployment policy set to All at Once. Deploy the Lambda functions, DynamoDB tables, and Amazon ES domain with an AWS CloudFormation template.

B.

Deploy the web application, Lambda functions, DynamoDB tables, and Amazon ES domain in an AWS CloudFormation template. Deploy changes with an AWS CodeDeploy in-place deployment.

C.

Run the web application in AWS Elastic Beanstalk with the deployment policy set to Immutable. Deploy the Lambda functions, DynamoDB tables, and Amazon ES domain with an AWS CloudFormation template.

D.

Deploy the web application, Lambda functions, DynamoDB tables, and Amazon ES domain in an AWS CloudFormation template. Deploy changes with an AWS CodeDeploy blue/green deployment.

E.

Run the web application in AWS Elastic Beanstalk with the deployment policy set to Rolling. Deploy the Lambda functions, DynamoDB tables, and Amazon ES domain with an AWS CloudFormation template.

Question # 5

Company policies require that information about IP traffic going between instances in the production Amazon VPC is captured. The capturing mechanism must always be enabled and the Security team must be notified when any changes in configuration occur.

What should be done to ensure that these requirements are met?

A.

Using the UserData section of an AWS CloudFormation template, install tcpdump on every provisioned Amazon EC2 instance. The output of the tool is sent to Amazon EFS for aggregation and querying. In addition, scheduling an Amazon CloudWatch Events rule calls an AWS Lambda function to check whether tcpdump is up and running and sends an email to the security organization when there is an exception.

B.

Create a flow log for the production VPC and assign an Amazon S3 bucket as a destination for delivery. Using Amazon S3 Event Notification, set up an AWS Lambda function that is triggered when a new log file gets delivered. This Lambda function updates an entry in Amazon DynamoDB, which is periodically checked by scheduling an Amazon CloudWatch Events rule to notify security when logs have not arrived.

C.

Create a flow log for the production VPC. Create a new rule using AWS Config that is triggered by configuration changes of resources of type "˜EC2:VPC'. As part of configuring the rule, create an AWS Lambda function that looks up flow logs for a given VPC. If the VPC flow logs are not configured, return a "˜NON_COMPLIANT' status and notify the security organization.

D.

Configure a new trail using AWS CloudTrail service. Using the UserData section of an AWS CloudFormation template, install tcpdump on every provisioned Amazon EC2 instance. Connect Amazon Athena to the CloudTrail and write an AWS Lambda function that monitors for a flow log disable event. Once the CloudTrail entry has been spotted, alert the security organization

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