- A
Use RDS Proxy to pool database connections.
Why wrong: RDS Proxy is for connection management, not DR.
- B
Configure automated backups to be copied to another Region.
Allows recovery from backups in another Region.
- C
Enable Multi-AZ deployment for the RDS instance.
Why wrong: Multi-AZ protects within a Region, not cross-Region.
- D
Create a Cross-Region Read Replica.
Provides a readable standby in another Region for failover.
- E
Enable deletion protection on the RDS instance.
Why wrong: Deletion protection prevents accidental deletion, not DR.
Question 1,486 of 1,750
DOP-C02 Resilient Cloud Solutions Practice Question
This DOP-C02 practice question tests your understanding of resilient cloud solutions. 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 designing a resilient architecture for a web application that uses Amazon RDS for MySQL. The application must be able to withstand the loss of an entire AWS Region. Which TWO actions should the company take?
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
✓
Configure automated backups to be copied to another Region.
To withstand the loss of an entire AWS Region, the company must have a disaster recovery strategy that includes cross-region data replication. Option B is correct because copying automated backups to another Region ensures that a recoverable copy of the database exists in a different geographic area, allowing restoration in a separate Region if the primary Region fails. Option D is correct because a Cross-Region Read Replica provides a live, asynchronously replicated copy of the database in another Region, which can be promoted to a standalone primary instance during a regional outage, minimizing recovery time.
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.
- ✗
Use RDS Proxy to pool database connections.
Why it's wrong here
RDS Proxy is for connection management, not DR.
- ✓
Configure automated backups to be copied to another Region.
Why this is correct
Allows recovery from backups in another Region.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Enable Multi-AZ deployment for the RDS instance.
Why it's wrong here
Multi-AZ protects within a Region, not cross-Region.
- ✓
Create a Cross-Region Read Replica.
Why this is correct
Provides a readable standby in another Region for failover.
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 DR.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Multi-AZ (which provides high availability within a Region) with cross-region disaster recovery, leading them to incorrectly select Multi-AZ as a solution for regional failure.
Detailed technical explanation
How to think about this question
Cross-Region Read Replicas use asynchronous replication based on MySQL's native binlog (binary log) to stream changes from the source to the replica in another Region, with a typical replication lag of seconds to minutes depending on network latency and workload. Automated backups copied to another Region are stored as Amazon RDS snapshots in S3, and you can restore them to a new RDS instance in any Region, but the recovery point objective (RPO) is limited by the backup schedule (up to 5 minutes for automated backups). In a real-world scenario, combining both approaches allows you to use the Read Replica for faster failover (lower RTO) while relying on cross-region backups as a fallback if the replica is corrupted or lagging.
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 cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
Got this wrong? Here's your next step.
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FAQ
Questions learners often ask
What does this DOP-C02 question test?
Resilient Cloud Solutions — This question tests Resilient Cloud Solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Configure automated backups to be copied to another Region. — To withstand the loss of an entire AWS Region, the company must have a disaster recovery strategy that includes cross-region data replication. Option B is correct because copying automated backups to another Region ensures that a recoverable copy of the database exists in a different geographic area, allowing restoration in a separate Region if the primary Region fails. Option D is correct because a Cross-Region Read Replica provides a live, asynchronously replicated copy of the database in another Region, which can be promoted to a standalone primary instance during a regional outage, minimizing recovery time.
What should I do if I get this DOP-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.
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Last reviewed: Jul 4, 2026
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