The answer is Amazon Macie for discovering sensitive data in S3. Macie uses machine learning and pattern matching to automatically identify and classify sensitive information like personally identifiable information or financial data stored in Amazon S3 buckets, providing continuous visibility into data security risks. This question tests your ability to match AWS security services to their primary compliance functions, a common drag-and-drop task on the AWS Certified SysOps Administrator Associate SOA-02 exam where you must distinguish between overlapping services like CloudTrail, Config, and GuardDuty. A frequent trap is confusing Macie with GuardDuty, which focuses on threat detection across workloads, not data classification. Remember the mnemonic “Macie minds the data” to link it directly to S3 sensitive data discovery.
SOA-C02 Security and Compliance Practice Question
This SOA-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.
Match each AWS service with its primary security compliance function. (Drag each service to its correct function.) (Choose 4.)
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "primary"
Why it matters: Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
AWS CloudTrail -> Detect unauthorized API calls
AWS CloudTrail is the service that records API activity in your AWS account, including both management and data events. By enabling CloudTrail, you can detect unauthorized API calls by analyzing the recorded events for actions that were not initiated by authorized users or services, such as an IAM user making a call from an unexpected IP address or using an unknown user agent.
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 -> Detect unauthorized API calls
Why this is correct
CloudTrail logs all API calls and can be used to detect unauthorized or unusual activity.
Clue confirmation
The clue word "primary" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
AWS Config continuously records and evaluates changes to AWS resources against desired configurations.
Clue confirmation
The clue word "primary" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✓
Amazon GuardDuty -> Identify malicious activity
Why this is correct
GuardDuty analyzes logs and network traffic to identify threats like compromised instances or unauthorized behavior.
Clue confirmation
The clue word "primary" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✓
Amazon Macie -> Discover sensitive data in S3
Why this is correct
Macie uses machine learning to automatically discover, classify, and protect sensitive data stored in Amazon S3.
Clue confirmation
The clue word "primary" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse AWS CloudTrail with AWS Config, thinking both are for monitoring configuration changes, but CloudTrail focuses on API activity logging while Config tracks resource configuration state changes.
Detailed technical explanation
How to think about this question
CloudTrail delivers log files to an S3 bucket, and you can use CloudTrail Insights to automatically detect unusual API activity, such as a spike in calls to terminate EC2 instances. The service integrates with Amazon CloudWatch Logs for real-time monitoring and can trigger AWS Lambda functions for automated remediation. A real-world scenario is detecting a compromised access key by identifying API calls from an unfamiliar geographic region.
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 — 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: AWS CloudTrail -> Detect unauthorized API calls — AWS CloudTrail is the service that records API activity in your AWS account, including both management and data events. By enabling CloudTrail, you can detect unauthorized API calls by analyzing the recorded events for actions that were not initiated by authorized users or services, such as an IAM user making a call from an unexpected IP address or using an unknown user agent.
What should I do if I get this SOA-C02 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "primary". Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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This SOA-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 SOA-C02 exam.
Question Discussion
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