The answer is AWS Config, as it is the service designed to monitor patch compliance with AWS Config rules that evaluate your Systems Manager Patch Manager results. AWS Config provides continuous monitoring of resource configurations, and by enabling the managed rule `ec2-managedinstance-patch-compliance-status`, you can define a compliance window—such as requiring patches within 7 days of release—and automatically flag any noncompliant instances. On the AWS Certified Security Specialty SCS-C02 exam, this scenario tests your understanding of how AWS Config acts as a centralized compliance dashboard, not just a configuration recorder; a common trap is confusing it with AWS Systems Manager’s native reporting or AWS Security Hub, but remember that Security Hub aggregates findings while AWS Config enforces the specific rule logic. For a memory tip, think of AWS Config as the “compliance cop” that checks your patch “tickets” against a 7-day deadline, while Patch Manager is just the mechanic applying the fix.
SCS-C02 Threat Detection and Incident Response Practice Question
This SCS-C02 practice question tests your understanding of threat detection and incident response. 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 uses AWS Systems Manager Patch Manager to apply patches to EC2 instances. The security team wants to ensure that instances are patched within 7 days of a patch release. Which service should be used to monitor and report compliance?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
AWS Config
AWS Config is the correct service because it provides continuous monitoring and evaluation of your AWS resource configurations, including patch compliance status via Systems Manager Patch Manager. You can create an AWS Config rule (e.g., 'ec2-managedinstance-patch-compliance-status') that checks whether instances have the required patches installed within a specified time frame (e.g., 7 days). AWS Config then reports noncompliant resources, enabling the security team to track and remediate patching gaps.
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 Config
Why this is correct
Config can use rules to evaluate whether instances are patched within a defined timeframe.
Related concept
Read the scenario before looking for a memorised answer.
✗
AWS Security Hub
Why it's wrong here
Security Hub aggregates findings but relies on other services for patch compliance data.
✗
Amazon Inspector
Why it's wrong here
Inspector assesses software vulnerabilities, but does not track patch compliance timelines.
✗
AWS Trusted Advisor
Why it's wrong here
Trusted Advisor checks cost, performance, security, but not patch compliance.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Amazon Inspector's vulnerability scanning with patch compliance monitoring, but Inspector does not track whether patches have been applied within a specific time window after release—it only identifies missing patches or vulnerabilities at a point in time.
Detailed technical explanation
How to think about this question
AWS Config uses managed rules like 'ec2-managedinstance-patch-compliance-status' that evaluate the 'PatchState' API from Systems Manager to determine if an instance is compliant based on the 'ComplianceType' (e.g., 'SECURITY', 'BUGFIX') and 'PatchComplianceStatus' (e.g., 'INSTALLED', 'MISSING'). The rule can be configured with a 'PatchWindowOffsetDays' parameter to enforce patching within a specific number of days after release. Under the hood, AWS Config evaluates resources on a periodic basis (e.g., every hour) and triggers remediation actions via Systems Manager Automation if needed.
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.
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.
Threat Detection and Incident Response — This question tests Threat Detection and Incident Response — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: AWS Config — AWS Config is the correct service because it provides continuous monitoring and evaluation of your AWS resource configurations, including patch compliance status via Systems Manager Patch Manager. You can create an AWS Config rule (e.g., 'ec2-managedinstance-patch-compliance-status') that checks whether instances have the required patches installed within a specified time frame (e.g., 7 days). AWS Config then reports noncompliant resources, enabling the security team to track and remediate patching gaps.
What should I do if I get this SCS-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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