The answer is that the trail is not configured to log data events for the S3 bucket. CloudTrail distinguishes between management events, which are logged by default, and data events, which are high-volume operations like GetObject, PutObject, and DeleteObject that must be explicitly enabled per bucket or prefix. Without this explicit configuration, object-level API calls are simply not captured, even if the trail is active and logging management events correctly. On the AWS Certified Security Specialty SCS-C02 exam, this tests your understanding of CloudTrail’s event categories and the common oversight of assuming all S3 activity is automatically logged. A frequent trap is confusing the default logging of management events (e.g., CreateBucket) with the opt-in requirement for data events. To remember: think of data events as “opt-in objects” — if you don’t check the box, the objects stay invisible in your logs.
SCS-C02 Data Protection Practice Question
This SCS-C02 practice question tests your understanding of data protection. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 uses AWS CloudTrail to log data events for S3 buckets. They notice that some S3 object-level API calls are not being logged. Which configuration could be the cause?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The trail is not configured to log data events for the S3 bucket.
CloudTrail trails must be explicitly configured to log data events for S3 buckets. Data events are high-volume operations (e.g., GetObject, PutObject, DeleteObject) and are not captured by default. If the trail is not configured to log data events for the specific S3 bucket, those object-level API calls will not appear in the CloudTrail logs.
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.
✓
The trail is not configured to log data events for the S3 bucket.
Why this is correct
Data events must be enabled for S3 object-level logging.
Related concept
Read the scenario before looking for a memorised answer.
✗
The trail is configured to log management events only.
Why it's wrong here
Management events do not include S3 object-level operations.
✗
The trail is using a CloudWatch Logs log group for delivery.
Why it's wrong here
Delivery destination does not affect which events are logged.
✗
The trail is configured to log read events only.
Why it's wrong here
Would log read events but miss write events; not the cause of missing both.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse management events (which are logged by default) with data events (which require explicit configuration), leading them to incorrectly assume that all S3 API calls are automatically captured by CloudTrail.
Detailed technical explanation
How to think about this question
CloudTrail data events for S3 are logged per bucket and per event type (Read, Write, or both). When enabling data events, you must specify the S3 bucket ARN or use a selector to include all buckets. A common misconfiguration is forgetting to add the bucket to the data event selector, or using an IAM role that lacks the necessary permissions for CloudTrail to deliver data events. Additionally, data events can generate high volume, so AWS recommends careful filtering to avoid excessive logging costs.
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.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Data Protection — This question tests Data Protection — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The trail is not configured to log data events for the S3 bucket. — CloudTrail trails must be explicitly configured to log data events for S3 buckets. Data events are high-volume operations (e.g., GetObject, PutObject, DeleteObject) and are not captured by default. If the trail is not configured to log data events for the specific S3 bucket, those object-level API calls will not appear in the CloudTrail logs.
What should I do if I get this SCS-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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Question Discussion
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