- A
AWS CloudTrail
Why wrong: AWS CloudTrail records all API activity in your account but does not automatically analyze the logs for anomalies or raise alerts for suspicious usage patterns. While you can enable CloudTrail Insights to detect unusual API activity, the question specifically asks for a managed threat detection service, which is not CloudTrail's primary function.
- B
Amazon GuardDuty
Amazon GuardDuty is the correct choice. It is a managed threat detection service that uses machine learning, anomaly detection, and threat intelligence feeds to monitor for unusual API activity, including compromised credentials and access from suspicious locations. GuardDuty raises findings that can be sent to AWS Security Hub or Amazon EventBridge for automated response.
- C
AWS Trusted Advisor
Why wrong: AWS Trusted Advisor inspects your AWS environment and provides best practice recommendations in categories such as cost optimization, performance, security, and fault tolerance. However, it does not continuously monitor API activity or detect compromised credentials; it performs periodic checks based on static rules.
- D
Amazon Inspector
Why wrong: Amazon Inspector is an automated vulnerability management service that scans EC2 instances, container images, and Lambda functions for software vulnerabilities and network exposure. It does not analyze IAM user activity or API call patterns, so it cannot detect compromised credentials based on geographic anomalies.
CLF-C02 Security and Compliance Practice Question
This CLF-C02 practice question tests your understanding of security and compliance. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 manages user access to AWS resources using IAM users. The security team wants to automatically detect if an IAM user's access key is being used from a geographic location that is unusual for that user, which could indicate a compromised credential. The team needs a managed threat detection service that monitors API activity and raises alerts for such anomalies. Which AWS service should the security team use?
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
Amazon GuardDuty
Amazon GuardDuty is a managed threat detection service that continuously monitors AWS API activity, including IAM user access key usage, and uses machine learning to establish baseline behavior. When it detects access from an unusual geographic location, it generates a finding alerting the security team to a potentially compromised credential. This directly meets the requirement for automated anomaly detection without manual configuration.
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 it's wrong here
AWS CloudTrail records all API activity in your account but does not automatically analyze the logs for anomalies or raise alerts for suspicious usage patterns. While you can enable CloudTrail Insights to detect unusual API activity, the question specifically asks for a managed threat detection service, which is not CloudTrail's primary function.
When this WOULD be correct
A company needs to audit all API calls made to AWS for compliance and forensic analysis, and requires a detailed record of who made each call, from which IP address, and when. CloudTrail would be the correct service to enable logging and monitoring of API activity.
- ✓
Amazon GuardDuty
Why this is correct
Amazon GuardDuty is the correct choice. It is a managed threat detection service that uses machine learning, anomaly detection, and threat intelligence feeds to monitor for unusual API activity, including compromised credentials and access from suspicious locations. GuardDuty raises findings that can be sent to AWS Security Hub or Amazon EventBridge for automated response.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
AWS Trusted Advisor
Why it's wrong here
AWS Trusted Advisor inspects your AWS environment and provides best practice recommendations in categories such as cost optimization, performance, security, and fault tolerance. However, it does not continuously monitor API activity or detect compromised credentials; it performs periodic checks based on static rules.
When this WOULD be correct
A company wants a service that automatically checks AWS account configurations against AWS best practices and provides recommendations to improve security, cost, performance, or fault tolerance. For example, Trusted Advisor would be correct if the question asked for a service that identifies unused IAM users or overly permissive security group rules.
- ✗
Amazon Inspector
Why it's wrong here
Amazon Inspector is an automated vulnerability management service that scans EC2 instances, container images, and Lambda functions for software vulnerabilities and network exposure. It does not analyze IAM user activity or API call patterns, so it cannot detect compromised credentials based on geographic anomalies.
When this WOULD be correct
A company wants to automatically assess EC2 instances for common vulnerabilities and exposures (CVEs) and deviations from security best practices, such as unintended network accessibility. Amazon Inspector would be the correct service for this vulnerability scanning use case.
Option-by-option analysis
Why each answer is right or wrong
Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The CLF-C02 exam frequently reuses these exact scenarios with slightly different constraints.
✓Amazon GuardDutyCorrect answer▾
Why this is correct
Amazon GuardDuty is the correct choice. It is a managed threat detection service that uses machine learning, anomaly detection, and threat intelligence feeds to monitor for unusual API activity, including compromised credentials and access from suspicious locations. GuardDuty raises findings that can be sent to AWS Security Hub or Amazon EventBridge for automated response.
✗AWS CloudTrailWrong answer — click to see why▾
Why this is wrong here
AWS CloudTrail records API activity but does not analyze or alert on anomalous geographic access patterns; it is a logging service, not a threat detection service.
★ When this WOULD be the correct answer
A company needs to audit all API calls made to AWS for compliance and forensic analysis, and requires a detailed record of who made each call, from which IP address, and when. CloudTrail would be the correct service to enable logging and monitoring of API activity.
Why candidates choose this
Candidates may confuse CloudTrail's logging of API calls with the ability to detect anomalies, assuming that because it records geographic information, it can also automatically alert on unusual patterns.
✗AWS Trusted AdvisorWrong answer — click to see why▾
Why this is wrong here
AWS Trusted Advisor provides best practice recommendations for cost optimization, performance, security, and fault tolerance, but it does not monitor API activity or detect anomalous geographic usage of IAM access keys.
★ When this WOULD be the correct answer
A company wants a service that automatically checks AWS account configurations against AWS best practices and provides recommendations to improve security, cost, performance, or fault tolerance. For example, Trusted Advisor would be correct if the question asked for a service that identifies unused IAM users or overly permissive security group rules.
Why candidates choose this
Candidates may confuse Trusted Advisor's security checks (like IAM key rotation or MFA recommendations) with real-time threat detection, assuming it can alert on unusual access patterns when it only provides static, periodic checks.
✗Amazon InspectorWrong answer — click to see why▾
Why this is wrong here
Amazon Inspector is a vulnerability management service that scans for software vulnerabilities and unintended network exposure, not a threat detection service that monitors API activity for anomalous geographic access patterns.
★ When this WOULD be the correct answer
A company wants to automatically assess EC2 instances for common vulnerabilities and exposures (CVEs) and deviations from security best practices, such as unintended network accessibility. Amazon Inspector would be the correct service for this vulnerability scanning use case.
Why candidates choose this
Candidates may confuse 'Inspector' with a threat detection service due to its name, or mistakenly think it monitors user behavior like GuardDuty, when it actually focuses on infrastructure vulnerabilities.
Analysis generated from the official CLF-C02blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse AWS CloudTrail's logging capability with active threat detection, not realizing that CloudTrail only records events and requires an additional service like GuardDuty to analyze and alert on anomalies.
Detailed technical explanation
How to think about this question
GuardDuty uses integrated threat intelligence feeds and machine learning models to analyze CloudTrail management events, VPC Flow Logs, and DNS logs. For IAM user anomaly detection, it specifically examines the source IP address geolocation against the user's historical access patterns, and can trigger findings like 'UnauthorizedAccess:IAMUser/InstanceCredentialExfiltration' or 'Recon:IAMUser/UserPermissions' when deviations occur. This service operates as a regional service but aggregates findings across accounts via AWS Organizations for centralized monitoring.
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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
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 — study guide chapter
Learn the concepts, then practise the questions
- →
Security and Compliance practice questions
Targeted practice on this topic area only
- →
All CLF-C02 questions
1,024 questions across all exam domains
- →
AWS Certified Cloud Practitioner CLF-C02 study guide
Full concept coverage aligned to exam objectives
- →
CLF-C02 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Related CLF-C02 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Cloud Concepts practice questions
Practise CLF-C02 questions linked to Cloud Concepts.
Security and Compliance practice questions
Practise CLF-C02 questions linked to Security and Compliance.
Cloud Technology and Services practice questions
Practise CLF-C02 questions linked to Cloud Technology and Services.
Billing, Pricing, and Support practice questions
Practise CLF-C02 questions linked to Billing, Pricing, and Support.
AWS shared responsibility model practice questions
Practise CLF-C02 questions linked to AWS shared responsibility model.
AWS IAM practice questions
Practise CLF-C02 questions linked to AWS IAM.
AWS pricing practice questions
Practise CLF-C02 questions linked to AWS pricing.
AWS support plans practice questions
Practise CLF-C02 questions linked to AWS support plans.
AWS S3 practice questions
Practise CLF-C02 questions linked to AWS S3.
AWS EC2 practice questions
Practise CLF-C02 questions linked to AWS EC2.
Practice this exam
Start a free CLF-C02 practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Questions learners often ask
What does this CLF-C02 question test?
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: Amazon GuardDuty — Amazon GuardDuty is a managed threat detection service that continuously monitors AWS API activity, including IAM user access key usage, and uses machine learning to establish baseline behavior. When it detects access from an unusual geographic location, it generates a finding alerting the security team to a potentially compromised credential. This directly meets the requirement for automated anomaly detection without manual configuration.
What should I do if I get this CLF-C02 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.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Keep practising
More CLF-C02 practice questions
- A company publishes a message each time a new product is added to its catalogue. Three services need to receive this mes…
- A media company stores frequently accessed video thumbnails in Amazon S3. The thumbnails are read multiple times every d…
- A company needs a service to translate domain names (like www.example.com) into IP addresses, check the health of their…
- A startup runs an application on AWS and receives a monthly bill that charges exactly for the number of compute hours us…
- A financial institution runs its core banking application on-premises due to regulatory requirements. It has connected i…
- A company wants to run a MySQL database in AWS without managing database software installation, applying patches, settin…
Last reviewed: Jun 11, 2026
This CLF-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 CLF-C02 exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.