This DBS-C01 practice question tests your understanding of database security. 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 using Amazon DynamoDB with a TTL attribute to automatically delete expired items. The security team is concerned that deleted items might still be recoverable from backups. They need to ensure that once an item is deleted by TTL, it is not included in future on-demand backups. Additionally, they want to ensure that the TTL deletion itself is logged for audit purposes. What should they do?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Enable DynamoDB Streams on the table and use a Lambda function to log TTL deletion events to CloudWatch Logs.
Option A is correct. DynamoDB Streams can capture TTL deletions as 'REMOVE' events. By streaming these events to CloudWatch Logs via Lambda, they can audit the deletions. On-demand backups capture the current state of the table, so TTL-deleted items will not be included if the backup is taken after the deletion. Option B is wrong because CloudTrail does not capture data plane events like TTL deletions. Option C is wrong because point-in-time recovery can restore to any point, including before TTL deletion, but the question is about future backups. Option D is wrong because TTL deletions are not captured in CloudTrail.
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.
✗
Disable TTL and implement a custom deletion process that logs deletions before removing items.
Why it's wrong here
This adds complexity; TTL is still needed.
✓
Enable DynamoDB Streams on the table and use a Lambda function to log TTL deletion events to CloudWatch Logs.
Why this is correct
Streams capture TTL deletions as REMOVE events.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use AWS CloudTrail to log the UpdateTimeToLive API call.
Why it's wrong here
That logs when TTL is configured, not when items are deleted.
✗
Enable AWS CloudTrail data events for DynamoDB to capture TTL deletions.
Why it's wrong here
CloudTrail data events do not capture TTL deletions.
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 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.
Identify which DBS-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.
Database Security — This question tests Database Security — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Enable DynamoDB Streams on the table and use a Lambda function to log TTL deletion events to CloudWatch Logs. — Option A is correct. DynamoDB Streams can capture TTL deletions as 'REMOVE' events. By streaming these events to CloudWatch Logs via Lambda, they can audit the deletions. On-demand backups capture the current state of the table, so TTL-deleted items will not be included if the backup is taken after the deletion. Option B is wrong because CloudTrail does not capture data plane events like TTL deletions. Option C is wrong because point-in-time recovery can restore to any point, including before TTL deletion, but the question is about future backups. Option D is wrong because TTL deletions are not captured in CloudTrail.
What should I do if I get this DBS-C01 question wrong?
Identify which DBS-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.
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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