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Honestly, I was a bit skeptical about Certstash at first, but these DOP-C02 dumps were a total game-changer. I saw at least 80% of these exact questions on the real exam. Passed this morning with a great score. Seriously, don't hesitate.
A company has a mobile application that makes HTTP API calls to an Application Load Balancer (ALB). The ALB routes requests to an AWS Lambda function. Many different versions of the application are in use at any given time, including versions that are in testing by a subset of users. The version of the application is defined in the user-agent header that is sent with all requests to the API. After a series of recent changes to the API, the company has observed issues with the application. The company needs to gather a metric for each API operation by response code for each version of the application that is in use. A DevOps engineer has modified the Lambda function to extract the API operation name, version information from the user-agent header and response code. Which additional set of actions should the DevOps engineer take to gather the required metrics?
Modify the Lambda function to write the API operation name, response code, and version number as a log line to an Amazon CloudWatch Logs log group. Configure a CloudWatch Logs metric filter that increments a metric for each API operation name. Specify response code and application version as dimensions for the metric.
Modify the Lambda function to write the API operation name, response code, and version number as a log line to an Amazon CloudWatch Logs log group. Configure a CloudWatch Logs Insights query to populate CloudWatch metrics from the log lines. Specify response code and application version as dimensions for the metric.
Configure the ALB access logs to write to an Amazon CloudWatch Logs log group. Modify the Lambda function to respond to the ALB with the API operation name, response code, and version number as response metadata. Configure a CloudWatch Logs metric filter that increments a metric for each API operation name. Specify response code and application version as dimensions for the metric.
Configure AWS X-Ray integration on the Lambda function. Modify the Lambda function to create an X-Ray subsegment with the API operation name, response code, and version number. Configure X-Ray insights to extract an aggregated metric for each API operation name and to publish the metric to Amazon CloudWatch. Specify response code and application version as dimensions for the metric.
Show answer and explanation
Correct answer: A. Modify the Lambda function to write the API operation name, response code, and version number as a log line to an Amazon CloudWatch Logs log group. Configure a CloudWatch Logs metric filter that increments a metric for each API operation name. Specify response code and application version as dimensions for the metric.
The solution requires extracting the API operation name, response code, and application version from the Lambda function and creating custom metrics with these dimensions. Option A correctly identifies that CloudWatch Logs metric filters can parse log lines and create metrics with multiple dimensions (response code and application version) for each API operation. This is the standard, native approach for converting log data into metrics. Option B suggests using CloudWatch Logs Insights, which is a query tool and does not automatically populate metrics; it requires manual queries. Option C incorrectly focuses on ALB access logs and response metadata, which would not contain the API operation details. Option D uses X-Ray, which adds complexity and requires additional configuration without the direct metric dimension support needed.
Why the other options are wrong
B. CloudWatch Logs Insights is a query tool for analyzing logs, not a mechanism for automatically populating CloudWatch metrics.
C. ALB access logs don't contain API operation details, and response metadata cannot be parsed by ALB to extract this information.
D. X-Ray adds unnecessary complexity and does not provide the straightforward metric filtering with dimensions that metric filters offer.
Question 2
A company provides an application to customers. The application has an Amazon API Gateway REST API that invokes an AWS Lambda function. On initialization, the Lambda function loads a large amount of data from an Amazon DynamoDB table. The data load process results in long coldstart times of 8-10 seconds. The DynamoDB table has DynamoDB Accelerator (DAX) configured. Customers report that the application intermittently takes a long time to respond to requests. The application receives thousands of requests throughout the day. In the middle of the day, the application experiences 10 times more requests than at any other time of the day. Near the end of the day, the application's request volume decreases to 10% of its normal total. A DevOps engineer needs to reduce the latency of the Lambda function at all times of the day. Which solution will meet these requirements?
Configure provisioned concurrency on the Lambda function with a concurrency value of 1. Delete the DAX cluster for the DynamoDB table.
Configure reserved concurrency on the Lambda function with a concurrency value of 0.
Configure provisioned concurrency on the Lambda function. Configure AWS Application Auto Scaling on the Lambda function with provisioned concurrency values set to a minimum of 1 and a maximum of 100.
Configure reserved concurrency on the Lambda function. Configure AWS Application Auto Scaling on the API Gateway API with a reserved concurrency maximum value of 100.
Show answer and explanation
Correct answer: C. Configure provisioned concurrency on the Lambda function. Configure AWS Application Auto Scaling on the Lambda function with provisioned concurrency values set to a minimum of 1 and a maximum of 100.
The problem involves variable traffic patterns with peak demand 10 times normal and end-of-day valleys at 10% of normal, combined with 8-10 second cold start times. Provisioned concurrency eliminates cold starts by maintaining pre-initialized Lambda instances, and Application Auto Scaling allows the provisioned concurrency to scale dynamically based on demand. Setting a minimum of 1 ensures some warm instances always exist to handle baseline traffic, while a maximum of 100 accommodates the 10x peak demand periods. This directly addresses the cold start latency issue and scales cost-effectively with traffic variations. Option A sets concurrency to only 1, which cannot handle peak traffic. Option B uses reserved concurrency with value 0, which doesn't reduce cold starts. Option D applies reserved concurrency and scales API Gateway instead of Lambda concurrency directly.
Why the other options are wrong
A. A concurrency value of 1 cannot handle thousands of daily requests or the 10x peak demand periods, and deleting DAX removes an already-deployed optimization.
B. Reserved concurrency with value 0 does nothing; it prevents Lambda from scaling and doesn't reduce cold starts.
D. Scaling API Gateway reserved concurrency does not address Lambda cold starts, which is the root cause of latency.
Question 3
A company is adopting AWS CodeDeploy to automate its application deployments for a Java-Apache Tomcat application with an Apache Webserver. The development team started with a proof of concept, created a deployment group for a developer environment, and performed functional tests within the application. After completion, the team will create additional deployment groups for staging and production. The current log level is configured within the Apache settings, but the team wants to change this configuration dynamically when the deployment occurs, so that they can set different log level configurations depending on the deployment group without having a different application revision for each group. How can these requirements be met with the LEAST management overhead and without requiring different script versions for each deployment group?
Tag the Amazon EC2 instances depending on the deployment group. Then place a script into the application revision that calls the metadata service and the EC2 API to identify which deployment group the instance is part of. Use this information to configure the log level settings. Reference the script as part of the AfterInstall lifecycle hook in the appspec.yml file.
Create a script that uses the CodeDeploy environment variable DEPLOYMENT_GROUP_ NAME to identify which deployment group the instance is part of. Use this information to configure the log level settings. Reference this script as part of the BeforeInstall lifecycle hook in the appspec.yml file.
Create a CodeDeploy custom environment variable for each environment. Then place a script into the application revision that checks this environment variable to identify which deployment group the instance is part of. Use this information to configure the log level settings. Reference this script as part of the ValidateService lifecycle hook in the appspec.yml file.
Create a script that uses the CodeDeploy environment variable DEPLOYMENT_GROUP_ID to identify which deployment group the instance is part of to configure the log level settings. Reference this script as part of the Install lifecycle hook in the appspec.yml file.
Show answer and explanation
Correct answer: B. Create a script that uses the CodeDeploy environment variable DEPLOYMENT_GROUP_ NAME to identify which deployment group the instance is part of. Use this information to configure the log level settings. Reference this script as part of the BeforeInstall lifecycle hook in the appspec.yml file.
CodeDeploy provides built-in environment variables during deployment, including DEPLOYMENT_GROUP_NAME, which identifies the current deployment group without requiring custom tagging, EC2 API calls, or custom runbooks. This variable can be accessed in any lifecycle hook script to dynamically configure settings based on the deployment group. Using it in the BeforeInstall hook allows configuration before the application is installed, which is appropriate for setting log level configurations. The approach requires a single script that uses this variable, avoiding the need for different script versions or applications for each environment. Option A requires EC2 tagging and API calls, adding management overhead. Option C requires creating custom environment variables for each deployment group. Option D references a non-standard environment variable DEPLOYMENT_GROUP_ID and uses the Install hook instead of BeforeInstall.
Why the other options are wrong
A. Querying EC2 metadata and API to determine deployment group adds unnecessary complexity compared to using built-in CodeDeploy environment variables.
C. Custom environment variables must be manually created for each deployment group, adding management overhead that the built-in DEPLOYMENT_GROUP_NAME variable eliminates.
D. DEPLOYMENT_GROUP_ID is not a standard CodeDeploy environment variable; DEPLOYMENT_GROUP_NAME is the correct variable to use.
11 reviews for AWS DOP-C02 Exam Practice Questions
Rated 5 out of 5
Francisca Hammond –
Honestly, I was a bit skeptical about Certstash at first, but these DOP-C02 dumps were a total game-changer. I saw at least 80% of these exact questions on the real exam. Passed this morning with a great score. Seriously, don't hesitate.
Rated 5 out of 5
Thomas Michaels –
Passed the DOP-C02 today! I was really struggling with the breadth of topics, but the questions from Certstash helped me zero in on what was important. The interface is clean and easy to use. Great resource, worth every penny.
Rated 5 out of 5
Lesley Mehta –
I failed my first attempt using another provider's material. A colleague recommended Certstash, and the difference was night and day. The questions were much more relevant to the actual exam. Passed comfortably on my second try. Thank you!
Rated 5 out of 5
Matthew Rose –
Simple and effective. The Certstash material is accurate, the site is easy to use, and it helped me pass the DOP-C02. What more can you ask for? A+ product.
Rated 5 out of 5
Tanya Rivera –
The DOP-C02 is a beast of an exam. I was feeling overwhelmed, but after running through the Certstash materials a few times, I started to see the patterns in the questions. It boosted my confidence massively. So relieved to have passed!
Rated 5 out of 5
Avery Wolfe –
I was expecting basic questions but these dumps offered in-depth coverage which helped me nail the exam. Huge Thanks to team Cert Stash...!
Rated 5 out of 5
Rania –
Passed with this
Useful resource for DOP-C02
Rated 5 out of 5
Jakob Heilmann –
It was an excellent experience with Certstash! Today I passed my DOP CO2 exam with a 930 Score. All questions in my exam were from DOP CO2 Dumps which I downloaded from this site. All Questions were the same in the real exam and all questions included detailed explanations. Thanks Again Certstash. Will be back for my next certification exam.
Rated 5 out of 5
Simone Decker –
Best Material at this price, I used DOP CO2 Dumps from 2 sites, But Certstash Material Quality and prices are Excellent, they provided me with DOP CO2 Dumps in PDF format and all questions are in rich reading PDF format, Answers and Explanations helped me in understanding and solving my queries. Thanks, team Certstash.
Rated 5 out of 5
Vikram –
Would recommend
Great product
Rated 4 out of 5
Juliane –
I just passed the DOP-C02 exam with a 900 score. For about 3 hours each day, I studied and prepared for the exam before taking it. The majority of the questions are identical to those found on the actual test, as they are from your DOP-C02 PDF Dumps. It was a good decision to prepare for the exam with Certstash.
Only logged in customers who have purchased this product may leave a review.
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ABOUT THIS PACK
What’s in the AWS DOP-C02 pack
480 questions across all six DOP-C02 domains
Answers and explanations for every question, including the wrong options
A questions-only PDF for timed practice runs
Delivered by email shortly after checkout
Free monthly updates for as long as the exam is live
Pass or your money back
A failed DOP-C02 attempt costs another US$300. This pack is US$39, paid once, and refunded if you fail.
What makes the DOP-C02 hard
DOP-C02 is a professional-level exam, and the question length alone wears candidates down. Each scenario is a paragraph of architecture, multi-account, multi-region, pipelines feeding pipelines, and every option is technically valid; the job is to spot the one that best satisfies the requirement buried in the middle.
Multi-account CI/CD with CodePipeline, CloudFormation StackSets and drift, blue/green and canary deployments, EventBridge-driven automation, incident response with Systems Manager, and monitoring and DR design are the decisions a senior DevOps engineer makes every day. Candidates who passed the associate-level exams but have not trained on professional-length scenarios consistently run out of time across 75 dense questions in 180 minutes. This pack has 480 practice questions across all six domains.
About the exam
DOP-C02 certifies DevOps engineers who automate, operate and secure AWS environments at scale, covering CI/CD, infrastructure as code, resilience and incident response with CodePipeline, CloudFormation, Systems Manager and EventBridge. No formal prerequisites, though AWS recommends two or more years operating AWS environments. Valid for three years.
Your PDF is prepared and sent to your email address after checkout, and you get a confirmation as soon as it is on its way.
Are updates included?
Yes. The pack is updated every month for as long as the exam is live, and updates are free for everyone who has bought it.
What if I fail the exam?
We refund the pack, or swap it for any other pack if you would rather keep studying. Sit the exam 7 to 30 days after buying, then send your official score report within 7 days of the exam date, as set out in the refund policy.
What is your pass rate?
99% of customers who prepare with a CertStash pack pass. If you do not, we refund the pack, or swap it for another pack.
Can I share it with colleagues?
Each purchase is licensed to one person. For a team, school or training organisation, email support@certstash.com for a licence that fits.
Francisca Hammond –
Honestly, I was a bit skeptical about Certstash at first, but these DOP-C02 dumps were a total game-changer. I saw at least 80% of these exact questions on the real exam. Passed this morning with a great score. Seriously, don't hesitate.
Thomas Michaels –
Passed the DOP-C02 today! I was really struggling with the breadth of topics, but the questions from Certstash helped me zero in on what was important. The interface is clean and easy to use. Great resource, worth every penny.
Lesley Mehta –
I failed my first attempt using another provider's material. A colleague recommended Certstash, and the difference was night and day. The questions were much more relevant to the actual exam. Passed comfortably on my second try. Thank you!
Matthew Rose –
Simple and effective. The Certstash material is accurate, the site is easy to use, and it helped me pass the DOP-C02. What more can you ask for? A+ product.
Tanya Rivera –
The DOP-C02 is a beast of an exam. I was feeling overwhelmed, but after running through the Certstash materials a few times, I started to see the patterns in the questions. It boosted my confidence massively. So relieved to have passed!
Avery Wolfe –
I was expecting basic questions but these dumps offered in-depth coverage which helped me nail the exam. Huge Thanks to team Cert Stash...!
Rania –
Useful resource for DOP-C02
Jakob Heilmann –
It was an excellent experience with Certstash! Today I passed my DOP CO2 exam with a 930 Score. All questions in my exam were from DOP CO2 Dumps which I downloaded from this site. All Questions were the same in the real exam and all questions included detailed explanations. Thanks Again Certstash. Will be back for my next certification exam.
Simone Decker –
Best Material at this price, I used DOP CO2 Dumps from 2 sites, But Certstash Material Quality and prices are Excellent, they provided me with DOP CO2 Dumps in PDF format and all questions are in rich reading PDF format, Answers and Explanations helped me in understanding and solving my queries. Thanks, team Certstash.
Vikram –
Great product
Juliane –
I just passed the DOP-C02 exam with a 900 score. For about 3 hours each day, I studied and prepared for the exam before taking it. The majority of the questions are identical to those found on the actual test, as they are from your DOP-C02 PDF Dumps. It was a good decision to prepare for the exam with Certstash.