- A
Amazon GuardDuty
Why wrong: Incorrect. GuardDuty is a threat detection service that monitors for malicious activity and unauthorized behavior using machine learning. It does not scan operating systems or applications for known CVEs or missing patches.
- B
Amazon Inspector
Correct. Amazon Inspector automatically assesses EC2 instances for software vulnerabilities (CVEs) and network exposure (e.g., open ports). It integrates with AWS Systems Manager to perform deep scans of the OS and application packages.
- C
AWS Security Hub
Why wrong: Incorrect. Security Hub provides a centralized view of security alerts and compliance status across multiple AWS services, but it does not perform vulnerability scanning itself. It would consume findings from Amazon Inspector, not replace it.
- D
AWS Trusted Advisor
Why wrong: Incorrect. Trusted Advisor checks for compliance with AWS best practices, including some security checks like whether security groups allow unrestricted access. However, it does not scan for CVEs or missing patches in installed software.
CLF-C02 Security and Compliance Practice Question
This CLF-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.
A company runs a fleet of Amazon EC2 instances that host a customer-facing web application. The security team wants to automatically identify software vulnerabilities, such as missing patches and common vulnerabilities and exposures (CVEs), in the operating system and applications running on these instances. The team also needs visibility into unintended network accessibility, such as instances with ports open to the internet. The solution must be natively integrated with AWS and should provide findings that can be viewed in a central dashboard. 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 Inspector
Amazon Inspector is the correct choice because it is a vulnerability management service that automatically scans EC2 instances for software vulnerabilities (missing patches, CVEs) and unintended network accessibility (e.g., open ports to the internet). It is natively integrated with AWS and provides findings in a central dashboard via the AWS Management Console or AWS Security Hub. This directly matches the security team's requirements for automated identification of OS/application vulnerabilities and network exposure.
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.
- ✗
Amazon GuardDuty
Why it's wrong here
Incorrect. GuardDuty is a threat detection service that monitors for malicious activity and unauthorized behavior using machine learning. It does not scan operating systems or applications for known CVEs or missing patches.
When this WOULD be correct
A company needs continuous threat detection for malicious activity and unauthorized behavior across AWS accounts and workloads, using VPC Flow Logs, DNS logs, and CloudTrail events, with findings in a central dashboard.
- ✓
Amazon Inspector
Why this is correct
Correct. Amazon Inspector automatically assesses EC2 instances for software vulnerabilities (CVEs) and network exposure (e.g., open ports). It integrates with AWS Systems Manager to perform deep scans of the OS and application packages.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
AWS Security Hub
Why it's wrong here
Incorrect. Security Hub provides a centralized view of security alerts and compliance status across multiple AWS services, but it does not perform vulnerability scanning itself. It would consume findings from Amazon Inspector, not replace it.
When this WOULD be correct
A company already uses multiple AWS security services (e.g., GuardDuty, Inspector, Macie) and needs a single dashboard to view and prioritize all security findings across accounts. Security Hub would be the correct answer for centralizing and correlating findings from these services.
- ✗
AWS Trusted Advisor
Why it's wrong here
Incorrect. Trusted Advisor checks for compliance with AWS best practices, including some security checks like whether security groups allow unrestricted access. However, it does not scan for CVEs or missing patches in installed software.
When this WOULD be correct
A company wants a service that automatically checks AWS resource configurations against AWS best practices and provides recommendations to optimize costs, improve performance, and close security gaps (e.g., unused resources, IAM key rotation). The team needs a single dashboard for these checks without deep vulnerability scanning.
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 InspectorCorrect answer▾
Why this is correct
Correct. Amazon Inspector automatically assesses EC2 instances for software vulnerabilities (CVEs) and network exposure (e.g., open ports). It integrates with AWS Systems Manager to perform deep scans of the OS and application packages.
✗Amazon GuardDutyWrong answer — click to see why▾
Why this is wrong here
Amazon GuardDuty is a threat detection service that identifies malicious activity and unauthorized behavior using network and account logs, but it does not perform vulnerability assessments for missing patches or CVEs in OS and applications.
★ When this WOULD be the correct answer
A company needs continuous threat detection for malicious activity and unauthorized behavior across AWS accounts and workloads, using VPC Flow Logs, DNS logs, and CloudTrail events, with findings in a central dashboard.
Why candidates choose this
Candidates may confuse GuardDuty's threat detection with vulnerability scanning, or assume it covers software vulnerabilities because it detects some CVE-based threats via network patterns.
✗AWS Security HubWrong answer — click to see why▾
Why this is wrong here
AWS Security Hub aggregates and prioritizes security findings from multiple AWS services (like Inspector, GuardDuty) but does not itself perform vulnerability scanning or network accessibility checks. The question requires a service that directly identifies CVEs and open ports, which is Inspector's function.
★ When this WOULD be the correct answer
A company already uses multiple AWS security services (e.g., GuardDuty, Inspector, Macie) and needs a single dashboard to view and prioritize all security findings across accounts. Security Hub would be the correct answer for centralizing and correlating findings from these services.
Why candidates choose this
Candidates may confuse Security Hub's central dashboard capability with the actual scanning functionality, assuming it can perform vulnerability assessments itself rather than just aggregating results from other services.
✗AWS Trusted AdvisorWrong answer — click to see why▾
Why this is wrong here
AWS Trusted Advisor provides best-practice recommendations across cost, performance, security, and fault tolerance, but it does not perform automated vulnerability scanning for missing patches or CVEs in EC2 instances. It also lacks a central findings dashboard for software vulnerabilities.
★ When this WOULD be the correct answer
A company wants a service that automatically checks AWS resource configurations against AWS best practices and provides recommendations to optimize costs, improve performance, and close security gaps (e.g., unused resources, IAM key rotation). The team needs a single dashboard for these checks without deep vulnerability scanning.
Why candidates choose this
Candidates may confuse Trusted Advisor's security checks (like open ports) with vulnerability scanning, or assume its broad recommendations cover software-level vulnerabilities, not realizing it focuses on infrastructure configuration rather than OS/application CVEs.
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 Amazon GuardDuty (threat detection) with Amazon Inspector (vulnerability scanning), or assume AWS Security Hub performs the scanning itself rather than aggregating findings from other services.
Detailed technical explanation
How to think about this question
Amazon Inspector uses an agent-based or agentless assessment methodology; for EC2, it deploys the AWS Systems Manager Agent (SSM Agent) to collect configuration and network data, then compares it against a library of over 1,200 rules (including CIS benchmarks and CVE databases). The network reachability assessment analyzes VPC flow logs and security group rules to identify ports accessible from the internet, providing a risk score for each finding. Under the hood, Inspector integrates with AWS Systems Manager Patch Manager to correlate missing patches with specific CVEs, enabling automated remediation workflows.
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 Inspector — Amazon Inspector is the correct choice because it is a vulnerability management service that automatically scans EC2 instances for software vulnerabilities (missing patches, CVEs) and unintended network accessibility (e.g., open ports to the internet). It is natively integrated with AWS and provides findings in a central dashboard via the AWS Management Console or AWS Security Hub. This directly matches the security team's requirements for automated identification of OS/application vulnerabilities and network exposure.
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.