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 Organizations with multiple accounts. The security team needs a centralized solution to automatically initiate incident response runbooks across all accounts when a threat is detected. Which approach meets these requirements?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use AWS Security Hub with cross-account aggregation and Amazon EventBridge to trigger AWS Systems Manager Automation runbooks.
AWS Security Hub with cross-account aggregation collects findings from all accounts into a single administrator account. Amazon EventBridge can then be configured to match specific Security Hub findings (e.g., a GuardDuty threat detection) and trigger AWS Systems Manager Automation runbooks. This provides a centralized, automated incident response mechanism across all accounts without requiring per-account Lambda functions or manual remediation.
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.
✓
Use AWS Security Hub with cross-account aggregation and Amazon EventBridge to trigger AWS Systems Manager Automation runbooks.
Why this is correct
Security Hub aggregates findings centrally, and EventBridge can trigger runbooks in target accounts.
Related concept
Read the scenario before looking for a memorised answer.
✗
Enable Amazon GuardDuty in all accounts and use its built-in remediation actions.
Why it's wrong here
GuardDuty's remediation actions are per-account and not centrally orchestrated.
✗
Configure AWS CloudFormation StackSets to deploy incident response stacks in all accounts.
Why it's wrong here
StackSets deploy infrastructure, not incident response actions.
✗
Deploy an AWS Lambda function in each member account to respond to findings.
Why it's wrong here
This approach is not centralized; each account requires separate management.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume GuardDuty's built-in remediation actions are sufficient for centralized multi-account response, but those actions are per-account and lack the orchestration and customization of Security Hub + EventBridge + Systems Manager Automation.
Detailed technical explanation
How to think about this question
Under the hood, Security Hub uses the AWS Security Finding Format (ASFF) to normalize findings from multiple sources (GuardDuty, Inspector, Macie). EventBridge rules in the administrator account can filter on ASFF fields like 'ProductName' and 'Severity' to trigger Systems Manager Automation documents (SSM documents) that run across accounts using cross-account IAM roles. This pattern leverages the 'aws:sourceAccount' condition in IAM policies to ensure only the administrator account can invoke runbooks in member accounts, maintaining security boundaries.
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: Use AWS Security Hub with cross-account aggregation and Amazon EventBridge to trigger AWS Systems Manager Automation runbooks. — AWS Security Hub with cross-account aggregation collects findings from all accounts into a single administrator account. Amazon EventBridge can then be configured to match specific Security Hub findings (e.g., a GuardDuty threat detection) and trigger AWS Systems Manager Automation runbooks. This provides a centralized, automated incident response mechanism across all accounts without requiring per-account Lambda functions or manual remediation.
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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