Free AWS DevOps Engineer Professional: AWS DevOps Engineer - Professional (DOP-C01) Exam Questions and Answers

Last updated: September 12, 2026

Exam code

DOP-C01

Provider

Amazon

Questions in our bank

1000+

Free to read

First 10, with answers

Official page

Official Exam website

Our test mode duration & pass mark

130 mins · 70%

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1. Question #1

   You have an application which consists of EC2 instances in an Auto Scaling group. Between a particular time frame every day, there is an increase in traffic to your website. Hence users are complaining of a poor response time on the application. You have configured your Auto Scaling group to deploy one new EC2 instance when CPU utilization is greater than 60% for 2 consecutive periods of 5 minutes. What is the least cost-effective way to resolve this problem?

   • A. Decrease the consecutive number of collection periods
   • B. Increase the minimum number of instances in the Auto Scaling group
   • C. Decrease the collection period to ten minutes
   • D. Decrease the threshold CPU utilization percentage at which to deploy a new instance
   Reveal Answer

2. Question #2

   Which Auto Scaling process would be helpful when testing new instances before sending traffic to them, while still keeping them in your Auto Scaling Group?

   • A. Suspend the process AZ Rebalance
   • B. Suspend the process Health Check
   • C. Suspend the process Replace Unhealthy
   • D. Suspend the process AddToLoadBalancer
   Reveal Answer

3. Question #3

   If your application performs operations or workflows that take a long time to complete, what service can the Elastic Beanstalk environment do for you?

   • A. Manages a Amazon SQS queue and running a daemon process on each instance
   • B. Manages a Amazon SNS Topic and running a daemon process on each instance
   • C. Manages Lambda functions and running a daemon process on each instance
   • D. Manages the ELB and running a daemon process on each instance
   Reveal Answer

4. Question #4

   One of the instances in your Auto Scaling group health check returns the status of Impaired to Auto Scaling. What will Auto Scaling do in this case.

   • A. Terminate the instance and launch a new instance
   • B. Send an SNS notification
   • C. Perform a health check until cool down before declaring that the instance has failed
   • D. Wait for the instance to become healthy before sending traffic
   Reveal Answer

5. Question #5

   You have been tasked with deploying a scalable distributed system using AWS OpsWorks. Your distributed system is required to scale on demand. As it is distributed, each node must hold a configuration file that includes the hostnames of the other instances within the layer. How should you configure AWS OpsWorks to manage scaling this application dynamically?

   • A. Create a Chef Recipe to update this configuration file, configure your AWS OpsWorks stack to use custom cookbooks, and assign this recipe to the Configure
   • B. Update this configuration file by writing a script to poll the AWS OpsWorks service API for new instance
   • C. Configure your base AMI to execute this script on Operating System startup.
   • D. Create a Chef Recipe to update this configuration file, configure your AWS OpsWorks stack to use custom cookbooks, and assign this recipe to execute when
   Reveal Answer

6. Question #6

   You have decided to migrate your application to the cloud. You cannot afford any downtime. You want to gradually migrate so that you can test the application with a small percentage of users and increase over time. Which of these options should you implement?

   • A. Use Direct Connect to route traffic to the on-premise locatio
   • B. In DirectConnect, configure the amount of traffic to be routed to the on-premise location.
   • C. Implement a Route 53 failover routing policy that sends traffic back to the on-premises application if the AWS application fails.
   • D. Configure an Elastic Load Balancer to distribute the traffic between the on-premises application and the AWS application.
   Reveal Answer

7. Question #7

   Your company releases new features with high frequency while demanding high application availability. As part of the application's A/B testing, logs from each updated Amazon EC2 instance of the application need to be analyzed in near real-time, to ensure that the application is working flawlessly after each deployment. If the logs show any anomalous behavior, then the application version of the instance is changed to a more stable one. Which of the following methods should you use for shipping and analyzing the logs in a highly available manner?

   • A. Ship the logs to Amazon S3 for durability and use Amazon EMR to analyze the logs in a batch manner each hour.
   • B. Ship the logs to Amazon CloudWatch Logs and use Amazon EMR to analyze the logs in a batch manner each hour.
   • C. Ship the logs to an Amazon Kinesis stream and have the consumers analyze the logs in a live manner.
   • D. Ship the logs to a large Amazon EC2 instance and analyze the logs in a live manner.
   Reveal Answer

8. Question #8

   There is a requirement to monitor API calls against your AWS account by different users and entities. There needs to be a history of those calls. The history of those calls are needed in in bulk for later review. Which 2 services can be used in this scenario

   • A. AWS Config; AWS Inspector
   • B. AWS CloudTrail; AWS Config
   • C. AWS CloudTrail; CloudWatch Events
   • D. AWS Config; AWS Lambda
   Reveal Answer

9. Question #9

   You need to create a simple, holistic check for your system's general availablity and uptime. Your system presents itself as an HTTP-speaking API. What is the most simple tool on AWS to achieve this with?

   • A. Route53 Health Checks
   • B. CloudWatch Health Checks
   • C. AWS ELB Health Checks
   • D. EC2 Health Checks
   Reveal Answer

10. Question #10

    You need the absolute highest possible network performance for a cluster computing application. You already selected homogeneous instance types supporting 10 gigabit enhanced networking, made sure that your workload was network bound, and put the instances in a placement group. What is the last optimization you can make?

    • A. Use 9001 MTU instead of 1500 for Jumbo Frames, to raise packet body to packet overhead ratios.
    • B. Segregate the instances into different peered VPCs while keeping them all in a placement group, so each one has its own Internet Gateway.
    • C. Bake an AMI for the instances and relaunch, so the instances are fresh in the placement group and do not have noisy neighbors.
    • D. Turn off SYN/ACK on your TCP stack or begin using UDP for higher throughput.
    Reveal Answer