A developer needs to step through code line by line to inspect variable values during execution of a Node.js application running locally. Which tool provides this capability?

Amazon CloudWatch Synthetics canary

A developer is troubleshooting a failed AWS CodeDeploy deployment to an EC2 Auto Scaling group. The deployment failed during the 'Install' phase. The developer needs to find the exact error message from the deployment. Which log source should the developer examine first?

The deployment's event history in the CodeDeploy console.

The /opt/codedeploy-agent/deployment-logs/codedeploy-agent-deployments.log file on the EC2 instance.

The application's own log file in /var/log/.

The CloudWatch Logs log group for the EC2 instances, filtering for 'CodeDeploy'.

An application running on EC2 instances cannot connect to an Amazon RDS database. Security groups for both resources appear correct. Which AWS service should be used to verify that the application can actually reach the database port?

AWS CloudFormation stack events

AWS Systems Manager (SSM) Reachability Analyzer

A developer needs to find all error messages in a log group that occurred in the last 15 minutes. Which CloudWatch Logs Insights query would accomplish this?

fields @timestamp, @message | stats count(*) by @message

fields @timestamp, @message | filter @message like /ERROR/ | sort @timestamp desc | limit 20

fields @timestamp | sort @timestamp desc | limit 20

filter @message like /ERROR/ | display @timestamp, @message

AWSCertified Developer - Associate

Domain 4Objective 1

Task 1: Assist in a Root Cause Analysis DVA-C02 Practice Questions (Page 1)

Part of the Content Domain 4: Troubleshooting and Optimization domain, which accounts for 18% of the DVA-C02 exam. AWS does not publish an official question count, but from its 130-minute exam (~50–85 total, ~9–15 in this domain), expect 3–5 from this objective — we provide 19 practice questions to prepare you well beyond it. (estimate)

19questions here

4free pages

7concepts

18%of the exam

Questions 1–5

1foundation · easy
A developer needs to step through code line by line to inspect variable values during execution of a Node.js application running locally. Which tool provides this capability?
Select an answer first
2foundation · easy
A Lambda function is failing to read messages from an Amazon SQS queue. The function's IAM role has been verified as correct. Which AWS service should be used to check whether the SQS ReceiveMessage API calls are being attempted and what errors are returned?
Select an answer first
3application · medium
A developer is troubleshooting a failed AWS CodeDeploy deployment to an EC2 Auto Scaling group. The deployment failed during the 'Install' phase. The developer needs to find the exact error message from the deployment. Which log source should the developer examine first?
Select an answer first
4foundation · easy
An application running on EC2 instances cannot connect to an Amazon RDS database. Security groups for both resources appear correct. Which AWS service should be used to verify that the application can actually reach the database port?
Select an answer first
5foundation · easy
A developer needs to find all error messages in a log group that occurred in the last 15 minutes. Which CloudWatch Logs Insights query would accomplish this?
Select an answer first

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