- A
CloudTrail with cross-account log delivery to a central S3 bucket and enable log file validation
This provides centralized storage and integrity verification.
- B
CloudWatch Logs to a centralized log group with IAM policies
Why wrong: CloudWatch Logs does not provide built-in integrity validation like CloudTrail.
- C
S3 server access logs delivered to each account's own bucket
Why wrong: This is not centralized and lacks integrity features.
- D
VPC Flow Logs to CloudWatch Logs in each account
Why wrong: Flow Logs are not for API activity and do not provide integrity validation.
Question 742 of 1,000
CCSP Cloud Security Operations Practice Question
This CCSP practice question tests your understanding of cloud security operations. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 cloud security architect is designing a log aggregation strategy for a multi-account AWS environment. The security team needs to ensure logs from all accounts are stored centrally and cannot be altered. Which combination of services meets these requirements?
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
✓
CloudTrail with cross-account log delivery to a central S3 bucket and enable log file validation
Option A is correct because AWS CloudTrail supports cross-account log delivery to a central S3 bucket, and enabling log file validation uses a digest file signed with the CloudTrail private key to cryptographically verify that log files have not been modified, deleted, or tampered with since delivery. This combination ensures centralized storage and immutability, meeting the security team's requirements.
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.
- ✓
CloudTrail with cross-account log delivery to a central S3 bucket and enable log file validation
Why this is correct
This provides centralized storage and integrity verification.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
CloudWatch Logs to a centralized log group with IAM policies
Why it's wrong here
CloudWatch Logs does not provide built-in integrity validation like CloudTrail.
- ✗
S3 server access logs delivered to each account's own bucket
Why it's wrong here
This is not centralized and lacks integrity features.
- ✗
VPC Flow Logs to CloudWatch Logs in each account
Why it's wrong here
Flow Logs are not for API activity and do not provide integrity validation.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may confuse centralized logging (e.g., CloudWatch Logs cross-account) with immutability, overlooking that only CloudTrail's log file validation provides cryptographic proof of non-repudiation and tamper detection.
Detailed technical explanation
How to think about this question
CloudTrail log file validation uses SHA-256 hashing and RSA digital signatures via the digest files stored in the same S3 bucket; each digest file contains a hash of the previous digest file, forming a chain that makes retroactive modification detectable. In a real-world scenario, if an attacker gains access to the central S3 bucket and modifies a log file, the digest chain will break, and the validation process will flag the discrepancy, ensuring forensic integrity for compliance frameworks like PCI DSS or FedRAMP.
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 developer is choosing between AES-256 (symmetric) and RSA-2048 (asymmetric) for encrypting a large file that will be sent to a partner. Symmetric encryption is fast but requires key exchange; asymmetric is slower but solves the key distribution problem. A hybrid approach — encrypt the file with AES, encrypt the AES key with RSA — is standard. Questions like this test whether you understand when each approach applies.
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.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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FAQ
Questions learners often ask
What does this CCSP question test?
Cloud Security Operations — This question tests Cloud Security Operations — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: CloudTrail with cross-account log delivery to a central S3 bucket and enable log file validation — Option A is correct because AWS CloudTrail supports cross-account log delivery to a central S3 bucket, and enabling log file validation uses a digest file signed with the CloudTrail private key to cryptographically verify that log files have not been modified, deleted, or tampered with since delivery. This combination ensures centralized storage and immutability, meeting the security team's requirements.
What should I do if I get this CCSP 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.
About these practice questions
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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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