Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A company uses AWS Organizations to manage multiple accounts. The security team wants a preventive control to ensure that nobody in any account, including account root users, can disable AWS CloudTrail or delete Amazon S3 bucket policies. Which AWS feature should the security team use?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
Distractor review
IAM roles with multi-factor authentication (MFA)
IAM roles with MFA enhance authentication security but do not prevent an administrator within an account from performing destructive actions such as disabling CloudTrail or deleting bucket policies. They control who can assume a role, not what actions are allowed across accounts.
B
Distractor review
AWS Config rules with automatic remediation
AWS Config rules are detective controls that evaluate resources for compliance with desired configurations. While automatic remediation can fix noncompliant resources after they are created, it does not prevent the initial action. For example, it could detect that CloudTrail was disabled and re-enable it, but does not stop the disable action from occurring.
C
Best answer
Service control policies (SCPs)
SCPs are a feature of AWS Organizations that allow central administrators to set permission guardrails for all accounts in the organization. SCPs can explicitly deny actions like cloudtrail:StopLogging or s3:DeleteBucketPolicy, even for the root user of member accounts. This provides a preventive control that cannot be overridden by account administrators.
D
Distractor review
AWS Shield Advanced
AWS Shield Advanced is a managed DDoS protection service designed to safeguard applications from distributed denial-of-service attacks. It does not provide any capabilities for managing or restricting IAM permissions or resource configurations across multiple accounts.
Common exam trap
Common exam trap: ACLs stop at the first match
ACLs are processed top to bottom. The first matching entry wins, and an implicit deny usually exists at the end.
Technical deep dive
How to think about this question
ACL questions test precision: source, destination, protocol, port and direction. A generally correct ACL can still fail if it is applied on the wrong interface or in the wrong direction.
KKey Concepts to Remember
- Standard ACLs match source addresses.
- Extended ACLs can match source, destination, protocol and ports.
- The first matching ACL entry is used.
- There is usually an implicit deny at the end.
TExam Day Tips
- Check inbound versus outbound direction.
- Read the ACL from top to bottom.
- Look for a broader permit or deny above the intended line.
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More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
Question 1
A developer needs to launch a test server for a new application prototype. The developer logs into the AWS Management Console, selects an Amazon EC2 instance type, configures the security group, and starts the instance. The instance is running within two minutes, and the developer did not need to submit a formal request to the company's IT procurement team or wait for approval from a cloud administrator. Which essential characteristic of cloud computing does this scenario best demonstrate?
Question 2
A solutions architect is planning a new web application on AWS. The workload will include 3 Amazon EC2 instances (t3.medium) running 24/7, an Application Load Balancer, and an Amazon RDS for MySQL db.t3.small database. The architect needs to estimate the monthly cost for the first year, considering different purchasing options (On-Demand, 1-year All Upfront Reserved Instance, and Compute Savings Plan). Which AWS tool should the architect use to create this estimate?
Question 3
A company's development team frequently needs temporary test environments. A developer can log into the AWS Management Console, select an Amazon EC2 instance type, configure storage, and launch the instance within minutes without any interaction with the IT infrastructure team. This capability is an example of which essential characteristic of cloud computing?
Question 4
A company's finance team needs to analyze AWS spending in detail. They require a report that includes hourly cost data for each AWS service, each individual resource (e.g., a specific EC2 instance), and any cost allocation tags applied. The team plans to export this data to an Amazon S3 bucket and then import it into a custom business intelligence (BI) analytics dashboard. Which AWS tool should the finance team use to generate this level of detailed cost data?
Question 5
A company uses AWS for its development environment. The finance team wants to set a monthly budget of $10,000. They want to receive an email notification when the actual costs reach 80% of the budget ($8,000) and again when costs exceed the budget. The team needs a managed AWS service that can automatically send these alerts without requiring custom code or third-party tools. Which AWS service should the team use?
Question 6
A company uses AWS Organizations to manage multiple accounts. The security team needs to enforce a policy that restricts SSH access (port 22) from the internet (0.0.0.0/0) in all VPCs across all accounts. The team wants to centrally define the allowed rules and automatically apply them to newly created VPCs and security groups, while also automatically remediating any existing non-compliant security groups. Which AWS service should the team use?
FAQ
Questions learners often ask
What does this CLF-C02 question test?
Standard ACLs match source addresses.
What is the correct answer to this question?
The correct answer is: Service control policies (SCPs) — Service control policies (SCPs) are a feature of AWS Organizations that allow central administration to control the maximum permissions that member accounts can grant to their IAM users and roles, including the root user. SCPs are preventive controls that can explicitly deny actions such as disabling CloudTrail or deleting S3 bucket policies across all accounts. IAM roles with MFA provide authentication security but do not prevent unauthorized actions by an account administrator. AWS Config rules with auto-remediation are detective and reactive, not preventive. AWS Shield Advanced is a DDoS protection service and does not address permission management.
What should I do if I get this CLF-C02 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
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