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Infrastructure as Code and Configuration Management (19%)

• Defining the deployment services based on the deployment needs.
• Applying the concepts required for managing a system using the AWS management services and tools;
• Determining the implementation process of the lifecycle hooks on the deployment;
• Applying the security concepts in the automation of resource provisioning;
• Determining the infrastructure and application deployment based on the business needs;

Amazon AWS Certified DevOps Engineer - Professional (DOP-C01) Sample Questions (Q215-Q220):

NEW QUESTION # 215
You run a 2000-engineer organization. You are about to begin using AWS at a large scale for the first time. You want to integrate with your existing identity management system running on Microsoft Active Directory, because your organization is a power-user of Active Directory. How should you manage your AWS identities in the most simple manner?

• A. Use an Sync Domain running on AWS Directory Service.
• B. Use a large AWS Directory Service AD Connector.
• C. Use an AWS Directory Sync Domain running on AWS Lambda
• D. Use a large AWS Directory Service Simple AD.

Answer: B

Explanation:
You must use AD Connector as a power-user of Microsoft Active Directory. Simple AD only works with a subset of AD functionality. Sync Domains do not exist; they are made up answers. AD Connector is a directory gateway that allows you to proxy directory requests to your on-premises Microsoft Active Directory, without caching any information in the cloud. AD Connector comes in
2 sizes; small and large. A small AD Connector is designed for smaller organizations of up to 500 users. A large AD Connector is designed for larger organizations of up to 5,000 users.
https://aws.amazon.com/directoryservice/details/

NEW QUESTION # 216
A mobile application running on eight Amazon EC2 instances is relying on a third-party API endpoint. The third-party service has a high failure rate because of limited capacity which is expected to be resolved in a few weeks.
In the meantime the mobile application developers have added a retry mechanism and are logging failed API requests. A DevOps Engineer must automate the monitoring of application togs and count the specific error messages if there are more than 10 errors within a 1-minute window the system must issue an alert How can the requirements be met with MINIMAL management overhead?

• A. Install the Amazon CloudWatch Logs agent on all instances to push the application logs to CloudWatch Logs Use a metric filter to generate a custom CloudWatch metric that records the number of failures and triggers a CloudWatch alarm if the custom metric reaches 10 errors in a 1- mmute period
• B. Install AfterAllowTraffic hook to the AppSpec file that forces traffic not having fully propagated before the push the application logs to CloudWatch Logs Use metric fitters to count the error messages every minute and trigger a CloudWatch alarm if the count exceeds errors.
• C. Install the Amazon CloudWatch Logs agent on all instances to push the access logs to CloudWatch Logs Create a CloudWatch Events rule to count the error messages every minute and trigger a CloudWatch alarm if the count exceeds 10 errors
• D. Deploy a custom script on all instances to check application logs regularly in a job Count the number of error messages every minute and push a data point to a custom CloudWatch metric Trigger a CloudWatch alarm if the custom metric reaches 10 errors in a 1-minute period

Answer: A

NEW QUESTION # 217
A company has a legacy application running on AWS. The application can only run on one Amazon EC2 instance at a time. Application metadata is stored in Amazon S3 and must be retrieved if the instance is restarted. The instance should be automatically restarted or relaunched if performance degrades.
Which solution will satisfy those requirements?

• A. Use the auto healing feature in AWS OpsWorks to stop and start the EC2 instance. Use a lifecycle event in OpsWorks to pull the data from Amazon S3 and update it on the instance.
• B. Use AWS CloudFormation to create an EC2 instance that includes the user-data property for the EC2 resource. Add a command in user data to retrieve the application metadata from Amazon S3.
• C. Use the Auto Recovery feature in Amazon EC2 to automatically stop and start the EC2 instance in case of a failure .Use a trigger in Amazon S3 to push the metadata to the instance when it is back up and running
• D. Create an Amazon Cloud Watch alarm to monitor the EC2 instance. When the StatusCheckfailed system alarm is triggered use the recover action to stop and start the instance. Use a trigger in Amazon S3 to push the metadata to the instance when it is back up and running

Answer: D

NEW QUESTION # 218
A large enterprise is deploying a web application on AWS. The application runs on Amazon EC2 instances behind an Application Load Balancer. The instances run in an Auto Scaling group across multiple Availability Zones. The application stores data in an Amazon RDS Oracle DB instance and Amazon DynamoDB.
There are separate environments for development, testing, and production.
What is the MOST secure and flexible way to obtain password credentials during deployment?

• A. Launch the EC2 instances with an EC2 IAM role to access AWS services. Retrieve the database credentials from AWS Secrets Manager.
• B. Launch the EC2 instances with an EC2 IAM role to access AWS services. Store the database passwords in an encrypted config file with the application artifacts.
• C. Retrieve an access key from an AWS Systems Manager plaintext parameter to access AWS services.
  Retrieve the database credentials from a Systems Manager SecureString parameter.
• D. Retrieve an access key from an AWS Systems Manager SecureString parameter to access AWS services. Retrieve the database credentials from a Systems Manager SecureString parameter.

Answer: B

NEW QUESTION # 219
Management has reported an increase in the monthly bill from Amazon web services, and they are extremely concerned with this increased cost.
Management has asked you to determine the exact cause of this increase.
After reviewing the billing report, you notice an increase in the data transfer cost.
How can you provide management with a better insight into data transfer use?

• A. Update your Amazon CloudWatch metrics to use five-second granularity, which will give better detailed metrics that can be combined with your billing data to pinpoint anomalies.
• B. Using Amazon CloudWatch metrics, pull your Elastic Load Balancing outbound data transfer metrics monthly, and include them with your billing report to show which application is causing higher bandwidth usage.
• C. Use Amazon CloudWatch Logs to run a map-reduce on your logs to determine high usage and data transfer.
• D. Deliver custom metrics to Amazon CloudWatch per application that breaks down application data transfer into multiple, more specific data points.

Answer: D

NEW QUESTION # 220
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