ANS-C01 Network Security, Compliance and Governance Practice Question
A company runs a web application on EC2 instances behind an Application Load Balancer. The security team requires that all traffic to the application be inspected by a third-party firewall appliance for compliance. The firewall appliance must be deployed in a separate VPC and must inspect traffic without introducing a single point of failure. Which architecture meets these requirements?
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
✓
Deploy Gateway Load Balancer endpoints in the application VPC and attach them to the firewall appliance in the inspection VPC across multiple Availability Zones.
Gateway Load Balancer endpoints in the application VPC allow traffic to be sent to a third-party firewall appliance deployed in a separate inspection VPC across multiple Availability Zones, providing high availability and traffic inspection. Option A is incorrect because Proxy Protocol v2, while used for preserving client IP, does not enable traffic inspection by a firewall. Option B is incorrect because AWS Direct Connect is a dedicated network connection to on-premises, not a mechanism for traffic inspection. Option C is incorrect because AWS Network Firewall is a managed service that can inspect traffic, but it cannot be used to route traffic to a third-party firewall appliance in a separate VPC; it is itself the firewall.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Configure the Application Load Balancer to send all traffic to the firewall appliance using Proxy Protocol v2.
Why it's wrong here
Proxy Protocol is used for preserving client IP information, not for traffic inspection.
- ✗
Use AWS Direct Connect to route all traffic through the firewall appliance.
Why it's wrong here
Direct Connect provides dedicated connectivity but does not provide traffic inspection capabilities.
- ✗
Use AWS Network Firewall to inspect traffic.
Why it's wrong here
AWS Network Firewall is a managed service, but it cannot forward traffic to a third-party appliance in a separate VPC.
- ✓
Deploy Gateway Load Balancer endpoints in the application VPC and attach them to the firewall appliance in the inspection VPC across multiple Availability Zones.
Why this is correct
Gateway Load Balancer allows transparent inspection of traffic by third-party appliances and supports multi-AZ deployment.
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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.