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Exam AWS Certified DevOps Engineer - Professional DOP-C02 All Questions

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Exam AWS Certified DevOps Engineer - Professional DOP-C02 topic 1 question 346 discussion

Exam question from Amazon's AWS Certified DevOps Engineer - Professional DOP-C02
Question #: 346
Topic #: 1
[All AWS Certified DevOps Engineer - Professional DOP-C02 Questions]

A DevOps team supports an application that runs on a large number of Amazon EC2 instances in an Auto Scaling group. The DevOps team uses AWS CloudFormation to deploy the EC2 instances. The application recently experienced an issue. A single instance returned errors to a large percentage of requests. The EC2 instance responded as healthy to both Amazon EC2 and Elastic Load Balancing health checks.

The DevOps team collects application logs in Amazon CloudWatch by using the embedded metric format. The DevOps team needs to receive an alert if any EC2 instance is responsible for more than half of all errors.

Which combination of steps will meet these requirements with the LEAST operational overhead? (Choose two.)

  • A. Create a CloudWatch Contributor Insights rule that groups logs from the CloudWatch application logs based on instance ID and errors.
  • B. Create a resource group in AWS Resource Groups. Use the CloudFormation stack to group the resources for the application. Add the application to CloudWatch Application Insights. Use the resource group to identify the application.
  • C. Create a metric filter for the application logs to count the occurrence of the term "Error.'' Create a CloudWatch alarm that uses the METRIC_COUNT function to determine whether errors have occurred. Configure the CloudWatch alarm to send a notification to an Amazon Simple Notification Service (Amazon SNS) topic to notify the DevOps team.
  • D. Create a CloudWatch alarm that uses the INSIGHT_RULE_METRIC function to determine whether a specific instance is responsible for more than half of all errors reported by EC2 instances. Configure the CloudWatch alarm to send a notification to an Amazon Simple Notification Service (Amazon SNS) topic to notify the DevOps team.
  • E. Create a CloudWatch subscription filter for the application logs that filters for errors and invokes an AWS Lambda function. Configure the Lambda function to send the instance ID and error and in a notification to an Amazon Simple Notification Service (Amazon SNS) topic to notify the DevOps team.
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Suggested Answer: AD 🗳️
by uncledana at Nov. 19, 2024, 11:13 a.m.
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CHRIS12722222
Highly Voted 4 months ago
Selected Answer: AD
contributor insight for top N
upvoted 5 times
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Srikantha
Most Recent 3 weeks, 4 days ago
Selected Answer: AD
CloudWatch Contributor Insights (A): CloudWatch Contributor Insights can be used to analyze CloudWatch logs and aggregate them by custom dimensions, such as the instance ID in this case. This will allow you to identify which EC2 instance is contributing the most to errors in the application logs, which directly addresses the requirement of identifying if any EC2 instance is responsible for more than half of the errors. CloudWatch Alarm with INSIGHT_RULE_METRIC (D): After creating the Contributor Insights rule to track error patterns and group logs by instance, you can use the INSIGHT_RULE_METRIC function to create a CloudWatch alarm. This metric can monitor the Contributor Insights rule for instances that contribute disproportionately to errors (e.g., more than 50% of all errors). You can configure the CloudWatch alarm to trigger notifications via Amazon SNS, alerting the DevOps team when the threshold is breached.
upvoted 2 times
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uncledana
5 months, 1 week ago
Selected Answer: AD
A and D provide a streamlined and automated way to track which EC2 instance is contributing to a high percentage of errors and send an alert when this threshold is crossed, with minimal manual intervention and operational overhead.
upvoted 4 times
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