DOP-C02 practice question: DR strategies, AWS Backup and RTO/RPO (2 of 3)

Resilient Cloud Solutions A free question from our original DOP-C02 practice exam. Try it, then open the answer to see why each option is right or wrong.

A logistics company stores shipment records in Amazon DynamoDB and Amazon EFS, and it runs a nightly AWS Backup plan for both. The backups are kept in a vault in the primary Region only.

The company's disaster recovery policy requires a copy of every backup in a second Region, with the same retention, and it requires the team to prove each quarter that restores from the copies actually work.

The team wants the copies and the restore tests to run on schedule, with no custom scripts to maintain.

Which TWO actions meet these requirements? (Choose two.)

Choose two answers.

A. Write a Lambda function that runs each night, starts DynamoDB exports to S3 and copies the EFS file system with rsync to a second Region, and deletes the copies after 35 days.
B. Enable DynamoDB point-in-time recovery on the tables, since it restores the tables to any second in the retention window in the same Region.
C. Add a copy action to the backup plan that copies each recovery point to a vault in the second Region with the same retention, so that every nightly backup has a copy there.
D. Configure an S3 replication rule for the backup vault's bucket, so that the S3 objects behind the EFS backups replicate to a second Region without any action from the backup plan.
E. Create a restore testing plan in the second Region that restores a randomly selected recovery point from that Region's vault on a quarterly schedule and records the result of each test.

Show the answer and explanation

Answers: C, E

A. Wrong: This copies the data, but the team would write and maintain the export, copy and retention logic. Exports and rsync copies also do not give AWS Backup's recovery points and restore records.
B. Wrong: Point-in-time recovery is useful for rolling back a table, but it does not copy data to a second Region. It also does not cover the EFS file systems in the plan. Learn more: Point-in-time backups for DynamoDB (opens in a new tab)
C. Right: Correct. An AWS Backup plan can copy recovery points to a vault in another Region, and the copy action can keep the same retention. The copies are created by the plan, with no scripts to maintain. Learn more: Creating backup copies across AWS Regions (opens in a new tab)
D. Wrong: AWS Backup vaults are not ordinary S3 buckets, and their recovery points are not managed through S3 replication rules. The approach would not produce restorable copies that the backup records track. Learn more: Replicating objects within and across Regions (opens in a new tab)
E. Right: Correct. AWS Backup restore testing plans restore recovery points on a schedule and record the outcome, which provides the quarterly proof the policy requires. No scripts are needed. Learn more: Restore testing (opens in a new tab)

Explanation

An AWS Backup plan can copy each recovery point to a vault in a second Region with retention set in the plan, and a restore testing plan restores selected recovery points on a schedule and records the results. Together they meet the copy and quarterly-proof requirements with no scripts. Custom exports, point-in-time recovery and S3 replication rules do not provide both.

DOP-C02 practice question: DR strategies, AWS Backup and RTO/RPO (2 of 3)

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