Amazon Inspector is the correct choice because it is the AWS service specifically built to perform automated security assessments of EC2 instances, scanning both the operating system and network configurations against a comprehensive library of security best practices and common vulnerabilities. This service continuously evaluates your instances for deviations from CIS benchmarks and known CVEs, then produces a detailed findings report that prioritizes risks. On the AWS Certified Cloud Practitioner CLF-C02 exam, this question tests your understanding of which native AWS tool handles vulnerability management and compliance checking for compute resources, often appearing as a straightforward service-to-function match. A common trap is confusing Inspector with AWS Shield or GuardDuty, but remember that Inspector focuses on internal instance-level assessments, while Shield handles DDoS protection and GuardDuty monitors for malicious activity. For a quick memory tip, think of Inspector as the “internal security auditor” that inspects your EC2 instances from the inside out.
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.
Which AWS service provides automated security assessments of EC2 instances against a library of security best practices and common vulnerabilities?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Why wrong: Trusted Advisor checks for best practices across cost, performance, and security categories but doesn't scan for specific CVE vulnerabilities in running software.
B
Amazon Inspector
Inspector continuously scans EC2 instances and container images for software vulnerabilities using CVE databases and checks for network exposure issues.
C
AWS Security Hub
Why wrong: Security Hub aggregates findings from Inspector and other services — it doesn't perform the vulnerability scanning itself.
D
AWS Config
Why wrong: Config evaluates resource configuration compliance against rules — it doesn't scan for software CVE 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 AWS service because it is specifically designed to perform automated security assessments of EC2 instances. It uses a library of rules mapped to common security best practices (e.g., CIS benchmarks) and common vulnerabilities (e.g., CVEs) to scan the instance's OS and network configuration, generating a detailed findings report.
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 Trusted Advisor
Why it's wrong here
Trusted Advisor checks for best practices across cost, performance, and security categories but doesn't scan for specific CVE vulnerabilities in running software.
✓
Amazon Inspector
Why this is correct
Inspector continuously scans EC2 instances and container images for software vulnerabilities using CVE databases and checks for network exposure issues.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
AWS Security Hub
Why it's wrong here
Security Hub aggregates findings from Inspector and other services — it doesn't perform the vulnerability scanning itself.
✗
AWS Config
Why it's wrong here
Config evaluates resource configuration compliance against rules — it doesn't scan for software CVE vulnerabilities.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse AWS Security Hub (which aggregates findings) with the service that actually performs the vulnerability scan, leading them to pick Security Hub instead of Amazon Inspector.
Detailed technical explanation
How to think about this question
Amazon Inspector uses an agent installed on the EC2 instance to collect telemetry, including network traffic, process behavior, and file system state. It then compares this data against a continuously updated library of rules, such as the Common Vulnerabilities and Exposures (CVE) database and CIS benchmarks, to identify misconfigurations and known vulnerabilities. In a real-world scenario, an Inspector assessment can detect an outdated OpenSSL version vulnerable to Heartbleed, while AWS Config would only see that the instance is using a specific AMI, not the software patch level.
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this CLF-C02 question in full detail.
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 AWS service because it is specifically designed to perform automated security assessments of EC2 instances. It uses a library of rules mapped to common security best practices (e.g., CIS benchmarks) and common vulnerabilities (e.g., CVEs) to scan the instance's OS and network configuration, generating a detailed findings report.
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.
Are there clue words in this question I should notice?
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
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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