- A
Configure DynamoDB Streams and a Lambda function to replicate data to another region.
Why wrong: Custom replication may introduce latency and complexity, not meeting RPO/RTO as reliably.
- B
Use DynamoDB on-demand backup and restore to another region.
Why wrong: Restoring from backup can take longer than 5 minutes.
- C
Use DynamoDB global tables to replicate data to another region.
Global tables provide near-real-time replication and fast failover.
- D
Enable point-in-time recovery (PITR) and restore to another region.
Why wrong: Restoring to a new table takes time, exceeding RTO.
Question 55 of 1,786
DEA-C01 Data Store Management Practice Question
This DEA-C01 practice question tests your understanding of data store management. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 data engineer is designing a multi-region disaster recovery plan for an Amazon DynamoDB table. The table stores critical user profile data and must have a Recovery Point Objective (RPO) of less than 1 minute and a Recovery Time Objective (RTO) of less than 5 minutes. Which solution meets these requirements?
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
✓
Use DynamoDB global tables to replicate data to another region.
DynamoDB global tables provide active-active multi-region replication with sub-second latency, ensuring that data written in one region is automatically replicated to other regions within seconds. This meets the RPO of less than 1 minute and RTO of less than 5 minutes because the table is already available in the secondary region for immediate reads and writes, with no manual restore or failover steps required.
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.
- ✗
Configure DynamoDB Streams and a Lambda function to replicate data to another region.
Why it's wrong here
Custom replication may introduce latency and complexity, not meeting RPO/RTO as reliably.
- ✗
Use DynamoDB on-demand backup and restore to another region.
Why it's wrong here
Restoring from backup can take longer than 5 minutes.
- ✓
Use DynamoDB global tables to replicate data to another region.
Why this is correct
Global tables provide near-real-time replication and fast failover.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Enable point-in-time recovery (PITR) and restore to another region.
Why it's wrong here
Restoring to a new table takes time, exceeding RTO.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse point-in-time recovery (PITR) or on-demand backups with multi-region replication, not realizing that restore operations are manual and time-consuming, whereas global tables provide automatic, near-real-time replication.
Detailed technical explanation
How to think about this question
DynamoDB global tables use a last-writer-wins (LWW) conflict resolution mechanism based on the timestamp in the DynamoDB Streams event, ensuring eventual consistency across regions. Under the hood, each replica table writes to its own stream, and the global table service propagates changes asynchronously but typically within seconds, making it suitable for active-active disaster recovery. In a real-world scenario, if a regional outage occurs, the application can simply redirect traffic to the secondary region without any data loss or downtime, as long as the application handles eventual consistency.
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.
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Data Store Management — study guide chapter
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FAQ
Questions learners often ask
What does this DEA-C01 question test?
Data Store Management — This question tests Data Store Management — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use DynamoDB global tables to replicate data to another region. — DynamoDB global tables provide active-active multi-region replication with sub-second latency, ensuring that data written in one region is automatically replicated to other regions within seconds. This meets the RPO of less than 1 minute and RTO of less than 5 minutes because the table is already available in the secondary region for immediate reads and writes, with no manual restore or failover steps required.
What should I do if I get this DEA-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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Last reviewed: Jul 4, 2026
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