- A
On-demand backups
Why wrong: Manual backups do not ensure 5-minute RPO.
- B
Point-in-time recovery (PITR)
PITR allows restore to any point within seconds, meeting RPO.
- C
Cross-Region Replication (CRR) to S3
Why wrong: CRR is for S3, not DynamoDB.
- D
Global tables
Global tables replicate data across regions with low latency.
- E
Scheduled backups using AWS Backup
Why wrong: Scheduled backups have minimum 1-hour intervals.
Question 292 of 1,730
DynamoDB Disaster Recovery: 5-Minute RPO with PITR & Global Tables
This DBS-C01 practice question tests your understanding of management and operations. 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 company is designing a disaster recovery strategy for Amazon DynamoDB. The strategy must have an RPO of 5 minutes and RTO of 1 hour. Which TWO options meet these requirements? (Choose 2.)
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
✓
Point-in-time recovery (PITR)
Point-in-time recovery (PITR) enables continuous backups of DynamoDB tables with 1-second granularity over a 35-day window, allowing restoration to any point within that window. This supports an RPO of 5 minutes because you can restore to a specific timestamp within seconds of the failure, and the RTO of 1 hour is achievable as table restoration typically completes within that timeframe for most table sizes.
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.
- ✗
On-demand backups
Why it's wrong here
Manual backups do not ensure 5-minute RPO.
- ✓
Point-in-time recovery (PITR)
Why this is correct
PITR allows restore to any point within seconds, meeting RPO.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Cross-Region Replication (CRR) to S3
Why it's wrong here
CRR is for S3, not DynamoDB.
- ✓
Global tables
Why this is correct
Global tables replicate data across regions with low latency.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Scheduled backups using AWS Backup
Why it's wrong here
Scheduled backups have minimum 1-hour intervals.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse on-demand backups or scheduled backups with PITR, not realizing that only PITR provides continuous, granular recovery points, and that Global tables are the only option that provides automatic cross-region failover without manual restore operations.
Detailed technical explanation
How to think about this question
Global tables use DynamoDB Streams and multi-region active-active replication to provide near-real-time replication with typical latency under 1 second, enabling failover to another region within minutes. PITR continuously records changes as write-ahead logs (WAL) in a separate storage layer, allowing point-in-time restores without impacting table performance, and the restore operation creates a new table with the same data and indexes, which can take from minutes to under an hour depending on table size and provisioned capacity.
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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FAQ
Questions learners often ask
What does this DBS-C01 question test?
Management and Operations — This question tests Management and Operations — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Point-in-time recovery (PITR) — Point-in-time recovery (PITR) enables continuous backups of DynamoDB tables with 1-second granularity over a 35-day window, allowing restoration to any point within that window. This supports an RPO of 5 minutes because you can restore to a specific timestamp within seconds of the failure, and the RTO of 1 hour is achievable as table restoration typically completes within that timeframe for most table sizes.
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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Last reviewed: Jul 4, 2026
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