ANS-C01 Network Security, Compliance and Governance Practice Question
A company has a VPC with public and private subnets. The security team wants to inspect all traffic leaving the VPC to the internet for malicious activity. Which THREE services should be used together to achieve this? (Choose three.)
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
✓
VPC Flow Logs
A NAT gateway (E) enables outbound traffic from private subnets to the internet. VPC Flow Logs (A) capture metadata of traffic flows. Amazon GuardDuty (C) can analyze flow logs to detect malicious activity. Together, these three services allow inspection of all outbound traffic. Option B (Internet gateway) is for inbound traffic from the internet. Option D (AWS Network Firewall) can also inspect traffic but is not part of this common three-service combination.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
VPC Flow Logs
Why this is correct
Captures network traffic metadata for analysis.
- ✗
Internet gateway
Why it's wrong here
Internet gateway is for inbound/outbound but not required for private subnets outbound.
- ✓
Amazon GuardDuty
Why this is correct
Analyzes flow logs for threats.
- ✗
AWS Network Firewall
Why it's wrong here
Can also inspect, but the question asks for three and this is not needed with GuardDuty.
- ✓
NAT gateway
Why this is correct
Routes outbound traffic from private subnets.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This ANS-C01 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the ANS-C01 exam.