Exam SOA-C03 Topic 1 Question 129 Discussion

Actual exam question for Amazon's SOA-C03 exam
Question #: 129
Topic #: 1

The company uses AWS Organizations to manage its accounts. For the production account, a SysOps administrator must ensure that all data is backed up daily for all current and future Amazon EC2 instances and Amazon Elastic File System (Amazon EFS) file systems. Backups must be retained for 30 days.
Which solution will meet these requirements with the LEAST amount of effort?

A. Create a backup plan in AWS Backup. Assign resources by resource ID, selecting all existing EC2 and EFS resources that are running in the account. Edit the backup plan daily to include any new resources. Schedule the backup plan to run every day with a lifecycle policy to expire backups after 30 days. B. Create a backup plan in AWS Backup. Assign resources by tags. Ensure that all existing EC2 and EFS resources are tagged correctly. Apply a service control policy (SCP) for the production account OU that prevents instance and file system creation unless the correct tags are applied.
Schedule the backup plan to run every day with a lifecycle policy to expire backups after 30 days. C. Create a lifecycle policy in Amazon Data Lifecycle Manager (Amazon DLM). Assign all resources by resource ID, selecting all existing EC2 and EFS resources that are running in the account. Edit the lifecycle policy daily to include any new resources. Schedule the lifecycle policy to create snapshots every day with a retention period of 30 days. D. Create a lifecycle policy in Amazon Data Lifecycle Manager (Amazon DLM). Assign all resources by tags. Ensure that all existing EC2 and EFS resources are tagged correctly. Apply a service control policy (SCP) that prevents resource creation unless the correct tags are applied. Schedule the lifecycle policy to create snapshots every day with a retention period of 30 days.

Suggested Answer: B Vote an answer

AWS Backup supports both EC2 and EFS natively. (Amazon DLM does not support EFS backups
- that rules out C and D right away.)
Using tags instead of listing individual resource IDs means you don't have to edit the plan every time someone launches a new instance or creates a new file system.
Adding an SCP that enforces tagging at creation guarantees that all future resources are automatically included in backups.
You can set the plan to run daily and expire after 30 days - exactly what's required.

by John at Jan 07, 2026, 09:38 AM

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