The correct choice is to enable point-in-time recovery (PITR) on the DynamoDB table. PITR provides continuous, automatic backups that allow restoration to any specific second within the last 35 days by default, meeting the daily backup requirement with zero manual scheduling or operational overhead. On the AWS Certified Data Engineer Associate DEA-C01 exam, this question tests your ability to distinguish between DynamoDB’s native backup mechanisms: PITR for continuous, point-in-time restores versus on-demand backups for manual snapshots, exports to S3 for analytical workloads, and DynamoDB Streams for change data capture. A common trap is confusing on-demand backups with PITR—remember that on-demand requires you to initiate each backup, while PITR runs silently in the background. For the memory tip, think “PITR = Point In Time Restore, no manual chore.”
DEA-C01 Data Operations and Support Practice Question
This DEA-C01 practice question tests your understanding of data operations and support. 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 needs to back up an Amazon DynamoDB table daily. The backup must be restorable to a specific point in time within the last 24 hours. Which solution meets these requirements with the LEAST operational overhead?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "least"
Why it matters: You want the option with minimum overhead, fewest steps, or lowest impact — not the most feature-rich or comprehensive answer.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Enable point-in-time recovery (PITR) on the table.
Option C is correct because DynamoDB's point-in-time recovery (PITR) provides continuous backups that allow restoration to any point within the last 35 days (default 24h to 35d) with no manual scheduling. Option A is incorrect because on-demand backups are manual and not continuous. Option B is incorrect because exporting to S3 is a separate process, not a backup feature. Option D is incorrect because DynamoDB Streams is for change data capture, not backups.
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 an on-demand backup of the table every 24 hours.
Why it's wrong here
On-demand backups are not continuous and require manual scheduling.
✗
Use DynamoDB Streams to replicate data to another table.
Why it's wrong here
Streams are for change data capture, not backup and restore.
✓
Enable point-in-time recovery (PITR) on the table.
Why this is correct
PITR provides continuous backups with point-in-time restore capability.
Clue confirmation
The clue word "least" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Export the table data to Amazon S3 every 6 hours using a Lambda function.
Why it's wrong here
Exporting to S3 is not a built-in backup feature and adds overhead.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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 DEA-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Data Operations and Support — This question tests Data Operations and Support — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Enable point-in-time recovery (PITR) on the table. — Option C is correct because DynamoDB's point-in-time recovery (PITR) provides continuous backups that allow restoration to any point within the last 35 days (default 24h to 35d) with no manual scheduling. Option A is incorrect because on-demand backups are manual and not continuous. Option B is incorrect because exporting to S3 is a separate process, not a backup feature. Option D is incorrect because DynamoDB Streams is for change data capture, not backups.
What should I do if I get this DEA-C01 question wrong?
Identify which DEA-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Are there clue words in this question I should notice?
Yes — watch for: "least". You want the option with minimum overhead, fewest steps, or lowest impact — not the most feature-rich or comprehensive answer.
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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