Exam SCS-C03 Topic 2 Question 31 Discussion

Actual exam question for Amazon's SCS-C03 exam
Question #: 31
Topic #: 2

A company runs workloads that are spread across hundreds of Amazon EC2 instances. During a recent security incident, an EC2 instance was compromised and ran malware code until the company manually terminated the instance.
The company is now using Amazon GuardDuty to detect malware on EC2 instances. A security engineer needs to implement a solution that automates a response when GuardDuty determines that an instance is infected. The solution must mitigate the incident and must comply with the AWS Well-Architected Framework guidance for incident response.
Which solution will meet these requirements?

A. Create an AWS Lambda function that runs when a GuardDuty scan determines that an instance is infected. Program the Lambda function to delete all elastic network interfaces that are associated with the instance. Program the Lambda function to also add a tag of "Infected" to the instance. B. Define a separate VPC to isolate EC2 instances. Define a security group that does not allow any network traffic. Create an AWS Lambda function that runs when a GuardDuty scan determines that an instance is infected. Program the Lambda function to move the instance into the separate VPC and to assign the security group to the instance. C. Create an AWS Lambda function that runs when a GuardDuty scan determines that an instance is infected. Program the Lambda function to detach all Amazon Elastic Block Store (Amazon EBS) volumes from the instance. Program the Lambda function to also add a tag of "Infected" to the EBS volumes and to terminate the instance afterward. D. Configure AWS Systems Manager Run Command to run when a GuardDuty scan determines that an instance is infected. Use Run Command to remove all network adapters from the operating system of the infected instance. Use Run Command to also add a tag of "Infected" to the instance.

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