- A
VPC Flow Logs for the subnet where the bucket resides
Why wrong: VPC Flow Logs record network IP traffic but do not capture API call details.
- B
AWS Config configuration history for the S3 bucket
Why wrong: AWS Config tracks configuration changes, not access requests.
- C
AWS CloudTrail data events for the S3 bucket
CloudTrail data events capture S3 object-level API calls, including source IP and identity.
- D
Amazon CloudWatch Logs for the EC2 instance accessing the bucket
Why wrong: CloudWatch Logs capture application logs but not S3 API calls directly.
Question 526 of 1,000
CCSP Cloud Security Operations Practice Question
This CCSP practice question tests your understanding of cloud security operations. Examine the command output carefully: the correct answer depends on what the output actually shows, not on general recall alone. 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 security engineer is investigating a potential data exfiltration incident involving an Amazon S3 bucket. Which set of logs would provide the most relevant information to identify the source IP and API calls made to the bucket?
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
✓
AWS CloudTrail data events for the S3 bucket
S3 access logs record details of requests made to an S3 bucket, including the requester's IP and the operation performed. CloudTrail data events also capture S3 API calls at the object level. VPC Flow Logs show network traffic but not API calls. CloudWatch logs could contain application logs but are not specific to S3 access.
Key principle: Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
VPC Flow Logs for the subnet where the bucket resides
Why it's wrong here
VPC Flow Logs record network IP traffic but do not capture API call details.
- ✗
AWS Config configuration history for the S3 bucket
Why it's wrong here
AWS Config tracks configuration changes, not access requests.
- ✓
AWS CloudTrail data events for the S3 bucket
Why this is correct
CloudTrail data events capture S3 object-level API calls, including source IP and identity.
Related concept
CIDR notation defines the prefix length.
- ✗
Amazon CloudWatch Logs for the EC2 instance accessing the bucket
Why it's wrong here
CloudWatch Logs capture application logs but not S3 API calls directly.
Common exam traps
Common exam trap: usable hosts are not the same as total addresses
Subnetting questions often tempt you into counting all addresses. In normal IPv4 subnets, the network and broadcast addresses are not usable host addresses.
Detailed technical explanation
How to think about this question
Subnetting questions test whether you can identify the network, broadcast address, usable range, mask and correct subnet. Slow down enough to calculate the block size correctly.
KKey Concepts to Remember
- CIDR notation defines the prefix length.
- Block size helps identify subnet boundaries.
- Network and broadcast addresses are not usable hosts in normal IPv4 subnets.
- The required host count determines the smallest suitable subnet.
TExam Day Tips
- Write the block size before choosing the subnet.
- Check whether the question asks for hosts, subnets or a specific address range.
- Do not confuse /24, /25, /26 and /27 host counts.
Key takeaway
Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.
Real-world example
How this comes up in practice
A SOC analyst notices unusual lateral movement in the network at 2 AM. The IR playbook dictates: identify and contain (isolate the affected machine), then eradicate (remove the malware), then recover (restore from backup), then document. Skipping containment before eradication risks the attacker regaining access. Questions like this test the sequence and rationale of incident response phases.
Quick reference
AWS S3 Storage Class Comparison
| Storage Class | Min Duration | Retrieval | Use Case |
|---|---|---|---|
| S3 Standard | None | Immediate | Frequently accessed data |
| S3 Standard-IA | 30 days | Immediate | Infrequent access, rapid retrieval |
| S3 One Zone-IA | 30 days | Immediate | Non-critical infrequent data |
| S3 Intelligent-Tiering | None | Immediate–hours | Unknown or changing access patterns |
| S3 Glacier Instant | 90 days | Milliseconds | Archive with instant retrieval |
| S3 Glacier Flexible | 90 days | Minutes–hours | Archive, flexible retrieval |
| S3 Glacier Deep Archive | 180 days | Hours | Long-term compliance archive |
What to study next
Got this wrong? Here's your next step.
Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related CCSP subnetting questions on CIDR, address ranges, and subnet selection.
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FAQ
Questions learners often ask
What does this CCSP question test?
Cloud Security Operations — This question tests Cloud Security Operations — CIDR notation defines the prefix length..
What is the correct answer to this question?
The correct answer is: AWS CloudTrail data events for the S3 bucket — S3 access logs record details of requests made to an S3 bucket, including the requester's IP and the operation performed. CloudTrail data events also capture S3 API calls at the object level. VPC Flow Logs show network traffic but not API calls. CloudWatch logs could contain application logs but are not specific to S3 access.
What should I do if I get this CCSP question wrong?
Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related CCSP subnetting questions on CIDR, address ranges, and subnet selection.
What is the key concept behind this question?
CIDR notation defines the prefix length.
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Last reviewed: Jul 4, 2026
This CCSP practice question is part of Courseiva's free ISC2 certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CCSP exam.
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