- A
Create a read replica in a different AWS Region.
Why wrong: Read replicas are asynchronous and not used for automatic failover.
- B
Enable automated backups with a retention period of 7 days.
Automated backups enable point-in-time recovery.
- C
Enable Multi-AZ deployment for automatic failover.
Multi-AZ provides a standby that can be promoted quickly.
- D
Enable deletion protection on the RDS instance.
Why wrong: Deletion protection prevents accidental deletion, not recovery.
- E
Increase the allocated storage to improve performance.
Why wrong: Storage size does not affect recovery.
Question 692 of 1,546
SOA-C02 Reliability and Business Continuity Practice Question
This SOA-C02 practice question tests your understanding of reliability and business continuity. 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 SysOps administrator is planning for disaster recovery of an RDS MySQL database. The database is currently in a single AZ. Which TWO actions will improve recovery time and reduce data loss? (Select TWO.)
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
✓
Enable automated backups with a retention period of 7 days.
Option B is correct because enabling automated backups with a 7-day retention period allows point-in-time recovery (PITR) to any second within the retention window, minimizing data loss (RPO) by restoring to the most recent backup. Option C is correct because Multi-AZ deployment provides automatic synchronous standby replication to a different Availability Zone, enabling automatic failover with minimal downtime (RTO) in case of an AZ failure or instance issue.
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.
- ✗
Create a read replica in a different AWS Region.
Why it's wrong here
Read replicas are asynchronous and not used for automatic failover.
- ✓
Enable automated backups with a retention period of 7 days.
Why this is correct
Automated backups enable point-in-time recovery.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Enable Multi-AZ deployment for automatic failover.
Why this is correct
Multi-AZ provides a standby that can be promoted quickly.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Enable deletion protection on the RDS instance.
Why it's wrong here
Deletion protection prevents accidental deletion, not recovery.
- ✗
Increase the allocated storage to improve performance.
Why it's wrong here
Storage size does not affect recovery.
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 failover, thinking a read replica can serve as a quick disaster recovery option, but read replicas are asynchronous and do not provide automatic failover or synchronous data protection.
Detailed technical explanation
How to think about this question
Multi-AZ deployment uses synchronous replication to a standby instance in a different AZ, ensuring zero data loss (RPO=0) during failover, with automatic DNS changeover typically completing within 1-2 minutes. Automated backups with PITR store transaction logs every 5 minutes, allowing restoration to any point within the retention period, which reduces data loss to at most 5 minutes. In a single-AZ setup without Multi-AZ, a failure requires manual restoration from a backup, which can take hours and lose up to 5 minutes of data if automated backups are enabled.
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
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
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.
- →
Reliability and Business Continuity — study guide chapter
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FAQ
Questions learners often ask
What does this SOA-C02 question test?
Reliability and Business Continuity — This question tests Reliability and Business Continuity — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Enable automated backups with a retention period of 7 days. — Option B is correct because enabling automated backups with a 7-day retention period allows point-in-time recovery (PITR) to any second within the retention window, minimizing data loss (RPO) by restoring to the most recent backup. Option C is correct because Multi-AZ deployment provides automatic synchronous standby replication to a different Availability Zone, enabling automatic failover with minimal downtime (RTO) in case of an AZ failure or instance issue.
What should I do if I get this SOA-C02 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.
About these practice questions
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Last reviewed: Jul 4, 2026
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