- A
Re-enable the GuardDuty finding in Amazon Detective.
Why wrong: The finding is already in Detective; the issue is that network data is missing.
- B
Enable GuardDuty EKS Audit Logs monitoring.
Why wrong: EKS Audit Logs are for Kubernetes, not for EC2 network traffic.
- C
Ensure that VPC Flow Logs are enabled for the VPC and are being published to Amazon CloudWatch Logs in the same account and Region as Detective.
Detective ingests VPC Flow Logs from CloudWatch Logs to provide network activity data.
- D
Install the Amazon Detective agent on the EC2 instance.
Why wrong: Detective does not require an agent; it ingests data from CloudWatch Logs and other sources.
Question 815 of 1,748
SCS-C02 Threat Detection and Incident Response Practice Question
This SCS-C02 practice question tests your understanding of threat detection and incident response. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 Amazon Detective to investigate security findings. The security team is analyzing a GuardDuty finding of type 'Backdoor:EC2/C&CActivity.B!DNS' for an EC2 instance. The team wants to use Detective to understand the full scope of the incident, including which other resources the instance communicated with and any IAM roles used. However, when the team opens the finding in Detective, they see no network activity data for the instance. The instance is in a VPC with VPC Flow Logs enabled, and Flow Logs are being published to CloudWatch Logs. What should the team do to enable Detective to display the network activity?
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
✓
Ensure that VPC Flow Logs are enabled for the VPC and are being published to Amazon CloudWatch Logs in the same account and Region as Detective.
Option C is correct because Amazon Detective ingests VPC Flow Logs from CloudWatch Logs to generate network activity visualizations for EC2 instances. Even though VPC Flow Logs are enabled and published to CloudWatch Logs, Detective requires that the logs are in the same AWS account and Region as the Detective behavior graph. If the logs are in a different account or Region, Detective cannot access them, resulting in no network activity data being displayed for the instance.
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.
- ✗
Re-enable the GuardDuty finding in Amazon Detective.
Why it's wrong here
The finding is already in Detective; the issue is that network data is missing.
- ✗
Enable GuardDuty EKS Audit Logs monitoring.
Why it's wrong here
EKS Audit Logs are for Kubernetes, not for EC2 network traffic.
- ✓
Ensure that VPC Flow Logs are enabled for the VPC and are being published to Amazon CloudWatch Logs in the same account and Region as Detective.
Why this is correct
Detective ingests VPC Flow Logs from CloudWatch Logs to provide network activity data.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Install the Amazon Detective agent on the EC2 instance.
Why it's wrong here
Detective does not require an agent; it ingests data from CloudWatch Logs and other sources.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates assume simply enabling VPC Flow Logs and publishing to CloudWatch Logs is sufficient, but they overlook the requirement that the logs must be in the same AWS account and Region as the Detective behavior graph for ingestion to occur.
Detailed technical explanation
How to think about this question
Amazon Detective uses a behavior graph that ingests VPC Flow Logs from CloudWatch Logs by subscribing to the log group in the same account and Region. The flow logs must be in the default format (version 2 or higher) and include fields such as srcaddr, dstaddr, and bytes; Detective parses these to build network topology and traffic summaries. A common real-world scenario is when an organization centralizes flow logs in a separate logging account or Region, which breaks Detective's ability to correlate network activity with the EC2 instance in the security team's account.
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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
What to study next
Got this wrong? Here's your next step.
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FAQ
Questions learners often ask
What does this SCS-C02 question test?
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: Ensure that VPC Flow Logs are enabled for the VPC and are being published to Amazon CloudWatch Logs in the same account and Region as Detective. — Option C is correct because Amazon Detective ingests VPC Flow Logs from CloudWatch Logs to generate network activity visualizations for EC2 instances. Even though VPC Flow Logs are enabled and published to CloudWatch Logs, Detective requires that the logs are in the same AWS account and Region as the Detective behavior graph. If the logs are in a different account or Region, Detective cannot access them, resulting in no network activity data being displayed for the instance.
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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Last reviewed: Jul 4, 2026
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