DEA-C01 Data Store Management Practice Question
A data engineer is designing a disaster recovery plan for an Amazon RDS for MySQL database. The database must be recoverable within 1 hour in a different AWS Region. Which TWO actions should the engineer take?
⚠ Common exam trap
It's easy for candidates to confuse Multi-AZ (high availability within a Region) with cross-Region disaster recovery, or they assume that scheduling snapshot copies via EventBridge is sufficient for fast recovery, ignoring the significant restore time required for snapshots.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Create a cross-Region read replica.
A cross-Region read replica for Amazon RDS for MySQL provides a fully provisioned secondary database in a different AWS Region that can be promoted to a standalone primary in minutes, meeting the 1-hour recovery time objective (RTO). This approach ensures continuous replication from the source database, minimizing data loss and enabling rapid failover without manual snapshot management.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Create a cross-Region read replica.
Why this is correct
A read replica can be promoted to a primary in another Region for disaster recovery.
- ✗
Enable Multi-AZ deployment.
Why it's wrong here
Multi-AZ provides failover within the same Region.
- ✓
Enable automated backups with cross-Region copy.
Why this is correct
Cross-Region backups allow recovery in another Region.
- ✗
Take manual snapshots and copy them to an S3 bucket in the other Region.
Why it's wrong here
Manual snapshots require manual intervention and are not automated.
- ✗
Use Amazon EventBridge to schedule snapshot copies.
Why it's wrong here
EventBridge can trigger Lambda but does not directly manage cross-Region backup automation.
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Same concept, more angles
1 more way this is tested on DEA-C01
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A data engineer is designing a disaster recovery strategy for an Amazon RDS for PostgreSQL database. The primary database is in us-east-1. Which TWO approaches provide cross-region disaster recovery?
medium- ✓ A.Configure cross-region automated backups to copy to us-west-2.
- B.Take a manual snapshot and copy it to us-west-2 daily.
- C.Use Amazon S3 cross-region replication for the database export.
- D.Enable Multi-AZ in us-east-1.
- ✓ E.Create a cross-region read replica in us-west-2.
Why A: Amazon RDS supports cross-region automated backups, which automatically copy backup data (snapshots and transaction logs) from the primary region (us-east-1) to a secondary region (us-west-2). This provides a fully managed, automated disaster recovery solution that allows point-in-time recovery in the secondary region without manual intervention.
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This DEA-C01 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the DEA-C01 exam.