This DOP-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 company is using AWS CloudTrail to log API calls across all accounts in AWS Organizations. The security team wants to ensure that CloudTrail logs are not tampered with and are available for forensic analysis. Which combination of actions should be taken? (Choose TWO.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Enable CloudTrail log file validation.
Options A and C are correct. Option A enables log file validation, which provides integrity verification. Option C enables S3 server-side encryption to protect data at rest. Option B is wrong because CloudTrail does not support AWS Backup. Option D is wrong because disabling S3 public access is good but not sufficient. Option E is wrong because MFA delete adds protection but is not a CloudTrail feature.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
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 public access to the S3 bucket using block public access settings.
Why it's wrong here
While important, this does not ensure integrity or encryption.
✗
Enable MFA delete on the S3 bucket.
Why it's wrong here
MFA delete protects against accidental deletion but is not a CloudTrail feature.
✓
Enable CloudTrail log file validation.
Why this is correct
Log file validation allows you to verify that log files have not been modified.
Related concept
Static NAT maps one inside address to one outside address.
✗
Use AWS Backup to create backups of the CloudTrail S3 bucket.
Why it's wrong here
AWS Backup can back up S3 buckets, but CloudTrail logs are already stored durably.
✓
Enable server-side encryption with AWS KMS (SSE-KMS) on the S3 bucket storing CloudTrail logs.
Why this is correct
Encryption protects the logs at rest from unauthorized access.
Related concept
Static NAT maps one inside address to one outside address.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
→Identify inside and outside interfaces first.
→Check whether the scenario needs static NAT, dynamic NAT or PAT.
→Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
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.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related DOP-C02 NAT questions on configuration and troubleshooting.
Security and Compliance — This question tests Security and Compliance — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Enable CloudTrail log file validation. — Options A and C are correct. Option A enables log file validation, which provides integrity verification. Option C enables S3 server-side encryption to protect data at rest. Option B is wrong because CloudTrail does not support AWS Backup. Option D is wrong because disabling S3 public access is good but not sufficient. Option E is wrong because MFA delete adds protection but is not a CloudTrail feature.
What should I do if I get this DOP-C02 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related DOP-C02 NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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Question Discussion
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