AWS Certified Solutions Architect – Professional — Question 682

A company is deploying a third-party firewall appliance solution from AWS Marketplace to monitor and protect traffic that leaves the company's AWS environments. The company wants to deploy this appliance into a shared services VPC and route all outbound internet-bound traffic through the appliances.
A solutions architect needs to recommend a deployment method that prioritizes reliability and minimizes failover time between firewall appliances within a single
AWS Region. The company has set up routing from the shared services VPC to other VPCs.
Which steps should the solutions architect recommend to meet these requirements? (Choose three.)

Answer options

• A. Deploy two firewall appliances into the shared services VPC, each in a separate Availability Zone.
• B. Create a new Network Load Balancer in the shared services VPC. Create a new target group, and attach it to the new Network Load Balancer. Add each of the firewall appliance instances to the target group.
• C. Create a new Gateway Load Balancer in the shared services VPC. Create a new target group, and attach it to the new Gateway Load Balancer. Add each of the firewall appliance instances to the target group.
• D. Create a VPC interface endpoint. Add a route to the route table in the shared services VPC. Designate the new endpoint as the next hop for traffic that enters the shared services VPC from other VPCs.
• E. Deploy two firewall appliances into the shared services VPC, each in the same Availability Zone.
• F. Create a VPC Gateway Load Balancer endpoint. Add a route to the route table in the shared services VPC. Designate the new endpoint as the next hop for traffic that enters the shared services VPC from other VPCs.

Correct answer: A, C, F

Explanation

Deploying the firewall appliances across multiple Availability Zones ensures high availability and resilience against AZ-level failures. A Gateway Load Balancer is specifically designed to deploy, scale, and manage virtual appliances, routing traffic transparently through registered targets. Using a Gateway Load Balancer endpoint as the next hop in the route tables ensures that traffic is dynamically and reliably routed to the firewalls with minimal failover time.