- A
Amazon Inspector
Amazon Inspector is the correct service. It is a vulnerability management service that automatically scans EC2 instances for software vulnerabilities and network exposure, providing a managed solution for scheduling scans and viewing findings in the AWS Management Console.
- B
AWS Shield
Why wrong: AWS Shield is a managed DDoS protection service. It does not perform vulnerability scanning or check for CVEs on EC2 instances. Its purpose is to protect against distributed denial-of-service attacks.
- C
Amazon GuardDuty
Why wrong: Amazon GuardDuty is a threat detection service that continuously monitors for malicious activity and unauthorized behavior by analyzing AWS CloudTrail logs, VPC Flow Logs, and DNS logs. It does not scan for known vulnerabilities or insecure configurations on EC2 instances.
- D
AWS WAF
Why wrong: AWS WAF is a web application firewall that helps protect web applications from common web exploits like SQL injection and cross-site scripting. It does not perform vulnerability scanning on EC2 instances or check for CVEs.
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's security team needs to run automated vulnerability scans on all Amazon EC2 instances in their production environment. They require a managed service that checks for common vulnerabilities and exposures (CVEs) and identifies insecure network configurations. The scans must be scheduled to run weekly and the results must be viewable in the AWS Management Console. Which AWS service should the 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 a managed vulnerability management service that automatically scans EC2 instances for software vulnerabilities (CVEs) and unintended network exposure. It supports scheduled recurring scans (e.g., weekly) and integrates with the AWS Management Console to display findings, making it the correct choice for the team's requirements.
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 Inspector
Why this is correct
Amazon Inspector is the correct service. It is a vulnerability management service that automatically scans EC2 instances for software vulnerabilities and network exposure, providing a managed solution for scheduling scans and viewing findings in the AWS Management Console.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
AWS Shield
Why it's wrong here
AWS Shield is a managed DDoS protection service. It does not perform vulnerability scanning or check for CVEs on EC2 instances. Its purpose is to protect against distributed denial-of-service attacks.
When this WOULD be correct
A question asking for a managed service to protect against DDoS attacks, especially for high-value applications requiring advanced detection and mitigation, would make AWS Shield the correct answer.
- ✗
Amazon GuardDuty
Why it's wrong here
Amazon GuardDuty is a threat detection service that continuously monitors for malicious activity and unauthorized behavior by analyzing AWS CloudTrail logs, VPC Flow Logs, and DNS logs. It does not scan for known vulnerabilities or insecure configurations on EC2 instances.
When this WOULD be correct
A company needs a managed threat detection service that continuously monitors AWS accounts and workloads for malicious activity, such as unusual API calls or potentially compromised instances, and provides findings in the AWS Management Console.
- ✗
AWS WAF
Why it's wrong here
AWS WAF is a web application firewall that helps protect web applications from common web exploits like SQL injection and cross-site scripting. It does not perform vulnerability scanning on EC2 instances or check for CVEs.
When this WOULD be correct
A company needs to protect a web application running on EC2 instances from common web exploits like SQL injection or cross-site scripting, and requires a managed firewall that integrates with CloudFront, ALB, or API Gateway. The question would specify web application protection rather than 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
Amazon Inspector is the correct service. It is a vulnerability management service that automatically scans EC2 instances for software vulnerabilities and network exposure, providing a managed solution for scheduling scans and viewing findings in the AWS Management Console.
✗AWS ShieldWrong answer — click to see why▾
Why this is wrong here
AWS Shield is a managed DDoS protection service, not a vulnerability scanner. It does not perform CVE checks or assess insecure network configurations on EC2 instances.
★ When this WOULD be the correct answer
A question asking for a managed service to protect against DDoS attacks, especially for high-value applications requiring advanced detection and mitigation, would make AWS Shield the correct answer.
Why candidates choose this
Candidates may confuse 'security scanning' with 'threat protection' and assume Shield covers all security assessments, or they may not differentiate between vulnerability scanning and DDoS mitigation.
✗Amazon GuardDutyWrong answer — click to see why▾
Why this is wrong here
Amazon GuardDuty is a threat detection service that monitors for malicious activity and unauthorized behavior, not a vulnerability scanning service that checks for CVEs and insecure configurations on EC2 instances.
★ When this WOULD be the correct answer
A company needs a managed threat detection service that continuously monitors AWS accounts and workloads for malicious activity, such as unusual API calls or potentially compromised instances, and provides findings in the AWS Management Console.
Why candidates choose this
Candidates may confuse GuardDuty's security monitoring and finding generation with vulnerability scanning, as both involve security assessments and produce findings in the console.
✗AWS WAFWrong answer — click to see why▾
Why this is wrong here
AWS WAF is a web application firewall that protects web applications from common exploits, not a vulnerability scanning service for EC2 instances. It does not perform automated scans for CVEs or insecure network configurations.
★ When this WOULD be the correct answer
A company needs to protect a web application running on EC2 instances from common web exploits like SQL injection or cross-site scripting, and requires a managed firewall that integrates with CloudFront, ALB, or API Gateway. The question would specify web application protection rather than vulnerability scanning.
Why candidates choose this
Candidates may confuse AWS WAF's security focus with vulnerability scanning, or think that because it inspects traffic it can identify vulnerabilities, but WAF only filters malicious requests, not scans for 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 confusing Amazon Inspector (vulnerability scanning) with Amazon GuardDuty (threat detection) or AWS Shield (DDoS protection), as all three are security services but serve fundamentally different purposes—candidates often pick GuardDuty because it 'detects threats' without realizing it does not scan for CVEs or network configurations.
Detailed technical explanation
How to think about this question
Amazon Inspector uses an agent-based or agentless assessment methodology; the agent (for EC2) performs network reachability checks and collects system configuration data, then compares it against a knowledge base of CVEs and CIS benchmarks. Scans can be triggered via Amazon EventBridge rules for scheduling, and findings are published to AWS Security Hub for centralized visibility. A subtle behavior: Inspector's network reachability checks analyze security group rules to identify ports open to the internet, which is distinct from traditional CVE scanning.
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.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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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 a managed vulnerability management service that automatically scans EC2 instances for software vulnerabilities (CVEs) and unintended network exposure. It supports scheduled recurring scans (e.g., weekly) and integrates with the AWS Management Console to display findings, making it the correct choice for the team's requirements.
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 →
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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.
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