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Amazon AWS DevOps Engineer Professional Exam Questions
AWS DevOps Engineer - Professional (DOP-C01) (Page 20 )

Updated On: 19-Apr-2026
Page 8 of 43
PDF with 208 Questions

A company recently launched an application that is more popular than expected. The company wants to ensure the application can scale to meet increasing demands and provide reliability using multiple Availability Zones (AZs). The application runs on a eet of Amazon EC2 instances behind an Application Load
Balancer (ALB). A DevOps engineer has created an Auto Scaling group across multiple AZs for the application. Instances launched in the newly added AZs are not receiving any tra c for the application.
What is likely causing this issue?

  1. Auto Scaling groups can create new instances in a single AZ only.
  2. The EC2 instances have not been manually associated to the AL
  3. The ALB should be replaced with a Network Load Balancer (NLB).
  4. The new AZ has not been added to the ALB.

Answer(s): D



A DevOps Engineer manages a web application that runs on Amazon EC2 instances behind an Application Load Balancer (ALB). The instances run in an EC2
Auto Scaling group across multiple Availability Zones. The engineer needs to implement a deployment strategy that:
Launches a second eet of instances with the same capacity as the original eet.
Maintains the original eet unchanged while the second eet is launched.
Transitions tra c to the second eet when the second eet is fully deployed.
Terminates the original eet automatically 1 hour after transition.
Which solution will satisfy these requirements?

  1. Use an AWS CloudFormation template with a retention policy for the ALB set to 1 hour. Update the Amazon Route 53 record to re ect the new ALB.
  2. Use two AWS Elastic Beanstalk environments to perform a blue/green deployment from the original environment to the new one. Create an application version lifecycle policy to terminate the original environment in 1 hour.
  3. Use AWS CodeDeploy with a deployment group con gured with a blue/green deployment con guration. Select the option Terminate the original instances in the deployment group with a waiting period of 1 hour.
  4. Use AWS Elastic Beanstalk with the con guration set to Immutable. Create an .ebextension using the Resources key that sets the deletion policy of the ALB to 1 hour, and deploy the application.

Answer(s): D



A healthcare services company is concerned about the growing costs of software licensing for an application for monitoring patient wellness. The company wants to create an audit process to ensure that the application is running exclusively on Amazon EC2 Dedicated Hosts. A DevOps Engineer must create a work ow to audit the application to ensure compliance. What steps should the Engineer take to meet this requirement with the LEAST administrative overhead?

  1. Use AWS Systems Manager Con guration Compliance. Use calls to the put-compliance-items API action to scan and build a database of noncompliant EC2 instances based on their host placement con guration. Use an Amazon DynamoDB table to store these instance IDs for fast access. Generate a report through Systems Manager by calling the list-compliance-summaries API action.
  2. Use custom Java code running on an EC2 instance. Set up EC2 Auto Scaling for the instance depending on the number of instances to be checked. Send the list of noncompliant EC2 instance IDs to an Amazon SQS queue. Set up another worker instance to process instance IDs from the SQS queue and write them to Amazon DynamoD Use an AWS Lambda function to terminate noncompliant instance IDs obtained from the queue, and send them to an Amazon SNS email topic for distribution.
  3. Use AWS Con g. Identify all EC2 instances to be audited by enabling Con g Recording on all Amazon EC2 resources for the region. Create a custom AWS Con g rule that triggers an AWS Lambda function by using the con g-rule-change-triggered blueprint. Modify the Lambda evaluateCompliance() function to verify host placement to return a NON_COMPLIANT result if the instance is not running on an EC2 Dedicated Host. Use the AWS Con g report to address noncompliant instances.
  4. Use AWS CloudTrail. Identify all EC2 instances to be audited by analyzing all calls to the EC2 RunCommand API action. Invoke an AWS Lambda function that analyzes the host placement of the instance. Store the EC2 instance ID of noncompliant resources in an Amazon RDS MySQL DB instance. Generate a report by querying the RDS instance and exporting the query results to a CSV text le.

Answer(s): C



A company has 100 GB of log data in an Amazon S3 bucket stored in .csv format. SQL developers want to query this data and generate graphs to visualize it.
They also need an e cient, automated way to store metadata from the .csv le. Which combination of steps should be taken to meet these requirements with the LEAST amount of effort? (Choose three.)

  1. Filter the data through AWS X-Ray to visualize the data.
  2. Filter the data through Amazon QuickSight to visualize the data.
  3. Query the data with Amazon Athena.
  4. Query the data with Amazon Redshift.
  5. Use AWS Glue as the persistent metadata store.
  6. Use Amazon S3 as the persistent metadata store.

Answer(s): B,C,E



A DevOps Engineer has several legacy applications that all generate different log formats. The Engineer must standardize the formats before writing them to
Amazon S3 for querying and analysis.
How can this requirement be met at the LOWEST cost?

  1. Have the application send its logs to an Amazon EMR cluster and normalize the logs before sending them to Amazon S3
  2. Have the application send its logs to Amazon QuickSight, then use the Amazon QuickSight SPICE engine to normalize the logs. Do the analysis directly from Amazon QuickSight
  3. Keep the logs in Amazon S3 and use Amazon Redshift Spectrum to normalize the logs in place
  4. Use Amazon Kinesis Agent on each server to upload the logs and have Amazon Kinesis Data Firehose use an AWS Lambda function to normalize the logs before writing them to Amazon S3

Answer(s): D



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