Amazon Inspector is the correct choice because it is specifically built to perform automated container image vulnerability scanning against Amazon ECR repositories, identifying Common Vulnerabilities and Exposures (CVEs) in your containerized applications before they reach production. It continuously monitors both images at rest and during deployment, producing detailed findings that allow you to remediate security issues proactively. On the AWS Certified Cloud Practitioner CLF-C02 exam, this question tests your understanding of which AWS service handles security scanning for containers versus other services like AWS Security Hub or AWS Config, which serve different compliance and monitoring roles. A common trap is confusing Amazon Inspector with Amazon GuardDuty, but remember that Inspector focuses on vulnerability scanning of workloads and container images, while GuardDuty monitors for malicious activity. Memory tip: think “Inspector inspects images for CVEs” — the name itself hints at its investigative role in finding known vulnerabilities.
CLF-C02 Cloud Technology and Services Practice Question
This CLF-C02 practice question tests your understanding of cloud technology and services. 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 needs to ensure their containerized applications pass security scans for known vulnerabilities before being deployed to production. Which AWS service scans container images for CVEs?
Why wrong: GuardDuty detects runtime threats using behavioral analysis — it doesn't scan container images for CVE vulnerabilities.
B
Amazon Inspector
Inspector continuously scans ECR container images for software vulnerabilities, generating prioritized findings with remediation guidance when CVEs are detected.
C
AWS Security Hub
Why wrong: Security Hub aggregates Inspector findings and other security signals — it doesn't perform the underlying container image scanning.
D
Amazon Macie
Why wrong: Macie discovers sensitive data in S3 — it doesn't scan container images for security vulnerabilities.
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 service because it is designed to automatically scan container images stored in Amazon Elastic Container Registry (ECR) for software vulnerabilities, including Common Vulnerabilities and Exposures (CVEs). It continuously monitors the images at rest and during deployment, providing a detailed findings report that helps you remediate security issues before the container reaches production.
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
GuardDuty detects runtime threats using behavioral analysis — it doesn't scan container images for CVE vulnerabilities.
✓
Amazon Inspector
Why this is correct
Inspector continuously scans ECR container images for software vulnerabilities, generating prioritized findings with remediation guidance when CVEs are detected.
Related concept
Read the scenario before looking for a memorised answer.
✗
AWS Security Hub
Why it's wrong here
Security Hub aggregates Inspector findings and other security signals — it doesn't perform the underlying container image scanning.
✗
Amazon Macie
Why it's wrong here
Macie discovers sensitive data in S3 — it doesn't scan container images for security vulnerabilities.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Amazon Inspector (which scans for CVEs in container images and EC2 instances) with Amazon GuardDuty (which detects threats but does not perform vulnerability scanning), leading them to select GuardDuty because of its security monitoring name.
Detailed technical explanation
How to think about this question
Amazon Inspector uses a managed vulnerability database (updated continuously from sources like NVD and vendor advisories) to compare the software packages in your container image layers against known CVEs. It integrates with ECR via a pull-through mechanism, scanning images on push and on a recurring schedule, and generates findings that include the CVE ID, CVSS score, and remediation advice. In a real-world CI/CD pipeline, you can use Inspector findings to block a deployment in AWS CodePipeline if a critical vulnerability is detected, ensuring only compliant images reach production.
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 cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this CLF-C02 question in full detail.
Cloud Technology and Services — This question tests Cloud Technology and Services — 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 service because it is designed to automatically scan container images stored in Amazon Elastic Container Registry (ECR) for software vulnerabilities, including Common Vulnerabilities and Exposures (CVEs). It continuously monitors the images at rest and during deployment, providing a detailed findings report that helps you remediate security issues before the container reaches production.
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.
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Question Discussion
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