- A
AWS CloudTrail
CloudTrail logs API calls for auditing.
- B
Amazon GuardDuty
Why wrong: GuardDuty is for threat detection.
- C
VPC Flow Logs
Why wrong: Flow logs capture network traffic, not API calls.
- D
AWS Config
Why wrong: Config records resource configuration changes, not API calls.
Question 259 of 1,705
ANS-C01 Network Security, Compliance and Governance Practice Question
This ANS-C01 practice question tests your understanding of network security, compliance and governance. 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 wants to audit all changes made to security groups and network ACLs in its AWS account. Which AWS service should be used to capture these API calls?
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
✓
AWS CloudTrail
AWS CloudTrail is the correct service because it records all API calls made to the AWS environment, including those that modify security groups and network ACLs. By enabling CloudTrail, you can capture CreateSecurityGroup, AuthorizeSecurityGroupIngress, RevokeSecurityGroupEgress, CreateNetworkAclEntry, and similar API calls, providing an audit trail of who made the change, when, and from which IP address.
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.
- ✓
AWS CloudTrail
Why this is correct
CloudTrail logs API calls for auditing.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Amazon GuardDuty
Why it's wrong here
GuardDuty is for threat detection.
- ✗
VPC Flow Logs
Why it's wrong here
Flow logs capture network traffic, not API calls.
- ✗
AWS Config
Why it's wrong here
Config records resource configuration changes, not API calls.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse AWS Config (which tracks configuration state) with CloudTrail (which tracks API actions), but the question explicitly asks for capturing the API calls themselves, not the resulting configuration changes.
Detailed technical explanation
How to think about this question
CloudTrail delivers log files in JSON or gzip format to an S3 bucket, and each event record includes the user identity (IAM user or role), source IP address, request parameters, and response elements. For security group changes, CloudTrail logs the exact API call (e.g., AuthorizeSecurityGroupIngress) along with the specific protocol, port range, and CIDR block, enabling forensic analysis of who opened a port to 0.0.0.0/0. A real-world scenario is compliance auditing where you must prove that only authorized administrators modified security group rules, which CloudTrail can verify by correlating API calls with IAM policies.
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 healthcare organisation deploys an application with a public-facing web tier and a private database tier. The database subnet has no public IP and only accepts connections from the web tier's security group. Questions like this test whether you can design cloud network isolation using VNets/VPCs, subnets, and security group rules.
What to study next
Got this wrong? Here's your next step.
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FAQ
Questions learners often ask
What does this ANS-C01 question test?
Network Security, Compliance and Governance — This question tests Network Security, Compliance and Governance — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: AWS CloudTrail — AWS CloudTrail is the correct service because it records all API calls made to the AWS environment, including those that modify security groups and network ACLs. By enabling CloudTrail, you can capture CreateSecurityGroup, AuthorizeSecurityGroupIngress, RevokeSecurityGroupEgress, CreateNetworkAclEntry, and similar API calls, providing an audit trail of who made the change, when, and from which IP address.
What should I do if I get this ANS-C01 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.
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Last reviewed: Jun 11, 2026
This ANS-C01 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 ANS-C01 exam.
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