DBS-C01 Deployment and Migration Practice Question
A company is deploying a new Amazon RDS for Oracle instance and needs to ensure high availability and automatic failover. Which configuration should be used?
⚠ Common exam trap
It's easy for candidates to confuse Read Replicas with Multi-AZ, assuming read replicas provide automatic failover, but they require manual promotion and do not offer synchronous replication or automatic failover.
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
✓
Multi-AZ deployment
(Multi-AZ deployment) is correct because it provisions a synchronous standby replica in a different Availability Zone, enabling automatic failover without data loss when the primary instance fails. This meets the high availability and automatic failover requirements for Amazon RDS for Oracle. Option D (Automated backups with point-in-time recovery) provides backup and recovery capabilities but does not ensure high availability or automatic failover; it is not a configuration for automatic failover.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Read Replicas in a different Region
Why it's wrong here
Read Replicas in a different Region do not provide automatic failover; they are for read scaling and require manual promotion.
- ✓
Multi-AZ deployment
Why this is correct
Correct. Multi-AZ creates a standby replica in a different AZ for automatic failover.
- ✗
Enhanced Monitoring
Why it's wrong here
Enhanced Monitoring provides metrics but does not offer failover or high availability.
- ✗
Automated backups with point-in-time recovery
Why it's wrong here
Incorrect. Automated backups with point-in-time recovery enable database recovery to a specific point in time, but they do not provide automatic failover or high availability.
- ✗
Deletion protection
Why it's wrong here
Deletion protection prevents accidental deletion but does not contribute to high availability or automatic failover.
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