The answer is a Multi-AZ deployment and automated backups with point-in-time recovery. Multi-AZ deployment provisions a synchronous standby replica in a different Availability Zone, ensuring automatic failover without data loss when the primary instance fails, which directly meets the high availability requirement for Amazon RDS Oracle. Automated backups with point-in-time recovery complement this by enabling you to restore the database to any second within the retention period, protecting against logical corruption or user errors. On the AWS Certified Database Specialty DBS-C01 exam, this pairing tests your understanding that high availability addresses infrastructure failure, while backups address data durability—a common trap is confusing Multi-AZ with read replicas, which do not provide automatic failover. Remember the mnemonic: “Multi-AZ for the crash, backups for the oops.”
DBS-C01 Deployment and Migration Practice Question
This DBS-C01 practice question tests your understanding of deployment and migration. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company is deploying a new Amazon RDS for Oracle instance and needs to ensure high availability and automatic failover. Which TWO configurations should be used?
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
Option B (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.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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 do not provide automatic failover.
✓
Multi-AZ deployment
Why this is correct
Multi-AZ provides automatic failover to a standby in another AZ.
Related concept
Read the scenario before looking for a memorised answer.
✗
Enhanced Monitoring
Why it's wrong here
Enhanced Monitoring provides metrics, not failover.
✓
Automated backups with point-in-time recovery
Why this is correct
Backups enable recovery in case of failure.
Related concept
Read the scenario before looking for a memorised answer.
✗
Deletion protection
Why it's wrong here
Deletion protection prevents accidental deletion, not failover.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often 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.
Detailed technical explanation
How to think about this question
Multi-AZ deployment uses synchronous replication to a standby instance in a separate Availability Zone, with a DNS name that automatically points to the primary. During a failure, Amazon RDS automatically flips the DNS to the standby, typically completing failover within 60–120 seconds. This is distinct from Oracle Data Guard configurations, as RDS manages the replication and failover transparently.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Deployment and Migration — This question tests Deployment and Migration — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Multi-AZ deployment — Option B (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.
What should I do if I get this DBS-C01 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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