- A
S3 Object Lock
Why wrong: S3 Object Lock prevents objects from being deleted or overwritten for a fixed retention period. While it helps with immutability, it does not generate cryptographic digest files that allow auditors to independently verify that log files have not been tampered with after delivery. The company needs a feature that provides verifiable integrity evidence, not just write-once-read-many (WORM) protection.
- B
CloudTrail log file integrity validation
CloudTrail log file integrity validation is a feature that automatically creates digest files containing the hash of each log file. These digests are signed using private keys from AWS Key Management Service (AWS KMS), enabling an auditor to verify that log files have not been altered or deleted. This feature is specifically designed for compliance scenarios that require cryptographic proof of log integrity.
- C
AWS Config conformance packs
Why wrong: AWS Config conformance packs are collections of AWS Config rules and remediation actions used to evaluate whether resource configurations comply with internal policies or external regulations. They do not provide cryptographic verification of CloudTrail log files. They are used for ongoing compliance checks of resource configurations, not for post-delivery log integrity.
- D
Amazon Detective
Why wrong: Amazon Detective analyzes AWS security data (e.g., VPC Flow Logs, CloudTrail logs, GuardDuty findings) to identify the root cause of potential security issues. It does not generate cryptographic digests or provide integrity verification for the log files themselves. Its purpose is investigation and analysis, not tamper-proof logging.
Quick Answer
The answer is CloudTrail log file integrity validation. This feature is correct because it automatically creates digest files that contain a hash of each log file delivered to your S3 bucket, and these digest files are themselves signed using a private key with the corresponding public key published by AWS, enabling an auditor to mathematically verify that the logs have not been tampered with after delivery. On the AWS Certified Cloud Practitioner CLF-C02 exam, this question tests your understanding of CloudTrail’s security features versus other options like S3 server access logging or CloudWatch; a common trap is confusing digest files with log file encryption at rest. Remember that integrity validation is about proving the logs haven’t been altered, not about encrypting them. A helpful memory tip: think of the digest files as a tamper-proof chain of custody—each digest references the previous one, so any break in the chain reveals tampering.
CLF-C02 Security and Compliance Practice Question
This CLF-C02 practice question tests your understanding of security and compliance. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 financial services company uses AWS CloudTrail to log all API calls in its AWS account. The company must demonstrate to auditors that the CloudTrail log files have not been tampered with after they were delivered to the Amazon S3 bucket. The company wants to use a feature that automatically creates digest files containing a hash of each log file, allowing the auditor to mathematically verify the integrity of the logs. Which AWS feature should the company enable to meet this requirement?
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 log file integrity validation
CloudTrail log file integrity validation is the correct feature because it automatically creates digest files that contain a hash of each log file. These digest files are themselves signed using a private key, and the corresponding public key is published by AWS, enabling auditors to mathematically verify that the log files have not been tampered with after delivery to S3.
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.
- ✗
S3 Object Lock
Why it's wrong here
S3 Object Lock prevents objects from being deleted or overwritten for a fixed retention period. While it helps with immutability, it does not generate cryptographic digest files that allow auditors to independently verify that log files have not been tampered with after delivery. The company needs a feature that provides verifiable integrity evidence, not just write-once-read-many (WORM) protection.
- ✓
CloudTrail log file integrity validation
Why this is correct
CloudTrail log file integrity validation is a feature that automatically creates digest files containing the hash of each log file. These digests are signed using private keys from AWS Key Management Service (AWS KMS), enabling an auditor to verify that log files have not been altered or deleted. This feature is specifically designed for compliance scenarios that require cryptographic proof of log integrity.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
AWS Config conformance packs
Why it's wrong here
AWS Config conformance packs are collections of AWS Config rules and remediation actions used to evaluate whether resource configurations comply with internal policies or external regulations. They do not provide cryptographic verification of CloudTrail log files. They are used for ongoing compliance checks of resource configurations, not for post-delivery log integrity.
- ✗
Amazon Detective
Why it's wrong here
Amazon Detective analyzes AWS security data (e.g., VPC Flow Logs, CloudTrail logs, GuardDuty findings) to identify the root cause of potential security issues. It does not generate cryptographic digests or provide integrity verification for the log files themselves. Its purpose is investigation and analysis, not tamper-proof logging.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may confuse S3 Object Lock's write-once-read-many (WORM) protection with cryptographic integrity validation, but Object Lock only prevents deletion/modification at the S3 layer and does not provide the hash-based digest chain needed for auditor verification.
Detailed technical explanation
How to think about this question
CloudTrail log file integrity validation uses SHA-256 hashing to create a digest for each log file, and the digest files are signed with a private key from a dedicated AWS key pair. The public key is available via the AWS CloudTrail public key endpoint, and auditors can use the AWS CLI command 'aws cloudtrail validate-logs' to automatically verify the hash chain and signature, ensuring no log files have been modified, deleted, or reordered.
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.
- →
Security and Compliance — study guide chapter
Learn the concepts, then practise the questions
- →
Security and Compliance practice questions
Targeted practice on this topic area only
- →
All CLF-C02 questions
1,024 questions across all exam domains
- →
AWS Certified Cloud Practitioner CLF-C02 study guide
Full concept coverage aligned to exam objectives
- →
CLF-C02 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Related CLF-C02 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Cloud Concepts practice questions
Practise CLF-C02 questions linked to Cloud Concepts.
Security and Compliance practice questions
Practise CLF-C02 questions linked to Security and Compliance.
Cloud Technology and Services practice questions
Practise CLF-C02 questions linked to Cloud Technology and Services.
Billing, Pricing, and Support practice questions
Practise CLF-C02 questions linked to Billing, Pricing, and Support.
AWS shared responsibility model practice questions
Practise CLF-C02 questions linked to AWS shared responsibility model.
AWS IAM practice questions
Practise CLF-C02 questions linked to AWS IAM.
AWS pricing practice questions
Practise CLF-C02 questions linked to AWS pricing.
AWS support plans practice questions
Practise CLF-C02 questions linked to AWS support plans.
AWS S3 practice questions
Practise CLF-C02 questions linked to AWS S3.
AWS EC2 practice questions
Practise CLF-C02 questions linked to AWS EC2.
Practice this exam
Start a free CLF-C02 practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Questions learners often ask
What does this CLF-C02 question test?
Security and Compliance — This question tests Security and Compliance — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: CloudTrail log file integrity validation — CloudTrail log file integrity validation is the correct feature because it automatically creates digest files that contain a hash of each log file. These digest files are themselves signed using a private key, and the corresponding public key is published by AWS, enabling auditors to mathematically verify that the log files have not been tampered with after delivery to S3.
What should I do if I get this CLF-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.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Same concept, more angles
1 more ways this is tested on CLF-C02
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A company uses AWS CloudTrail to log all API calls in their AWS account for compliance and security auditing. Their compliance officer needs to prove to an external auditor that the CloudTrail log files have not been altered or deleted after they were created. The company must use the most cost-effective and built-in AWS feature to detect any tampering with the log files. What should the company enable?
medium- ✓ A.Enable CloudTrail log file integrity validation
- B.Enable server-side encryption for the CloudTrail log file S3 bucket using SSE-KMS
- C.Configure CloudTrail to send logs to CloudWatch Logs and set a metric filter for changes
- D.Enable multi-factor authentication (MFA) delete on the S3 bucket
Why A: CloudTrail log file integrity validation uses a hash chain (SHA-256) to create a digest file that is signed with a private key, allowing you to verify that log files have not been modified, deleted, or tampered with after delivery. This is a built-in, no-cost feature that directly meets the compliance officer's requirement to prove log integrity to an external auditor without additional services or costs.
Last reviewed: Jun 11, 2026
This CLF-C02 practice question is part of Courseiva's free Amazon Web Services 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 CLF-C02 exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.