The correct answer is to apply a service control policy (SCP) at the root OU to deny CloudTrail and S3 delete actions, and enable a CloudTrail organizational trail. This works because SCPs act as a centralized permission guardrail across all member accounts in AWS Organizations, explicitly blocking actions like cloudtrail:DeleteTrail and s3:DeleteObject, while an organizational trail ensures that logging configuration is inherited and cannot be stopped or altered by individual account administrators. On the AWS Certified Security Specialty SCS-C02 exam, this question tests your understanding of preventive versus detective controls and the hierarchy of policy evaluation—specifically that SCPs override even root user permissions in member accounts, unlike IAM or resource-based policies. A common trap is confusing SCPs with IAM policies or assuming CloudWatch alarms provide prevention; remember, alarms only detect after the fact. Memory tip: SCPs are the “security ceiling” for all accounts in an organization—they deny before any action can happen.
SCS-C02 Management and Security Governance Practice Question
This SCS-C02 practice question tests your understanding of management and security governance. 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 company uses AWS Organizations with all features enabled. The security team needs to ensure that no member account can disable AWS CloudTrail logging or delete CloudTrail logs stored in S3. Which combination of preventive controls should be implemented?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Apply a service control policy (SCP) at the root OU to deny CloudTrail and S3 delete actions, and enable CloudTrail organizational trail.
Option B is correct because SCPs can deny actions like cloudtrail:DeleteTrail and s3:DeleteObject, and a CloudTrail organizational trail prevents member accounts from stopping logging. Option A is wrong because IAM policies are not enforced by root users. Option C is wrong because resource-based policies alone cannot prevent root user actions. Option D is wrong because CloudWatch alarms are detective, not preventive.
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.
✗
Set up CloudWatch alarms to notify when CloudTrail is modified or logs are deleted.
Why it's wrong here
Alarms are detective, not preventive.
✓
Apply a service control policy (SCP) at the root OU to deny CloudTrail and S3 delete actions, and enable CloudTrail organizational trail.
Why this is correct
SCPs prevent all users including root; organizational trail prevents disabling.
Related concept
Static NAT maps one inside address to one outside address.
✗
Use IAM policies in each member account to deny CloudTrail and S3 delete actions.
Why it's wrong here
IAM policies cannot restrict the root user.
✗
Apply an S3 bucket policy denying delete actions, and enable CloudTrail organizational trail.
Why it's wrong here
Bucket policy does not prevent root from disabling CloudTrail itself.
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 SCS-C02 NAT questions on configuration and troubleshooting.
Management and Security Governance — This question tests Management and Security Governance — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Apply a service control policy (SCP) at the root OU to deny CloudTrail and S3 delete actions, and enable CloudTrail organizational trail. — Option B is correct because SCPs can deny actions like cloudtrail:DeleteTrail and s3:DeleteObject, and a CloudTrail organizational trail prevents member accounts from stopping logging. Option A is wrong because IAM policies are not enforced by root users. Option C is wrong because resource-based policies alone cannot prevent root user actions. Option D is wrong because CloudWatch alarms are detective, not preventive.
What should I do if I get this SCS-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 SCS-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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