Exam AWS Certified DevOps Engineer - Professional DOP-C02 topic 1 question 314 discussion

Same as the question 20, A is correct.

Event Source of AWS Health: The DevOps engineer wants to act on AWS Health notifications. AWS Health provides event types for scheduled instance terminations and instance retirements, which are common reasons for needing to restart EC2 instances during a maintenance window. Event Types: EventBridge can be configured to listen for event types like EC2 Instance Termination or EC2 Instance Retirement to automate instance restarts when these events occur. Target Systems Manager Automation Runbook: AWS Systems Manager Automation runbooks such as AWS-RestartEC2Instance are pre-defined automation workflows that can restart EC2 instances. When triggered by EventBridge, this runbook can automatically restart the EC2 instances that need remediation.

Option A does not satisfy the maintenance window requirement

C is the right answer. A will do action immediately but using lambda we can create a maintenance window according to organization downtime activity. A could have been the right answer, but it takes immediate action on an event that is not required. We have to do this in a particular time.

question states during the maintenance window not immediately

C. Lambda Function to Register a Maintenance Window Task • While this approach could work, it unnecessarily complicates the solution. AWS Systems Manager and EventBridge provide native integrations that eliminate the need for a custom Lambda function. Therefore the answer should be A

AWS Health provides notifications for events such as scheduled instance termination and decommissioning.

Although a bit more complex than A, I think C is best. Option A would just restart the instance when the event was received, and not withing the company's maintenance windows.