Question 1,691 of 1,663
DBS-C01 Deployment and Migration Practice Question
A company is deploying a new MySQL database on Amazon RDS. The database must be highly available and support cross-Region disaster recovery. Which TWO actions should be taken? (Choose two.)
⚠ Common exam trap
Many candidates confuse Multi-AZ with cross-region replication, thinking that Multi-AZ can be deployed across regions (Option B), or they overlook that automated backups (Option C) are region-bound and do not provide automatic failover or cross-Region DR.
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 provides a secondary copy of the database in a different AWS Region, which can be promoted to a standalone primary in a disaster scenario, enabling cross-Region disaster recovery. Option E is correct because Multi-AZ deployment provides automatic failover within a single region by synchronously replicating data to a standby instance in a different Availability Zone, ensuring high availability. Together, these two actions satisfy both high availability (within-region failover) and cross-Region DR requirements.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Enable encryption at rest using AWS KMS.
Why it's wrong here
Encryption is for security, not HA or DR.
- ✗
Deploy a Multi-AZ instance in multiple regions.
Why it's wrong here
RDS does not support Multi-Region Multi-AZ.
- ✗
Enable automated backups with a retention period of 35 days.
Why it's wrong here
Backups are for recovery, not cross-region DR.
- ✓
Create a cross-region read replica.
Why this is correct
Provides disaster recovery in another region.
- ✓
Enable Multi-AZ for automatic failover within a region.
Why this is correct
Provides high availability within a region.
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Last reviewed: Jul 4, 2026
This DBS-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 DBS-C01 exam.
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