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A telecommunications company is operating an application on AWS, utilizing an AWS Direct Connect link between their on-premises data center and AWS. The application is hosted on Amazon EC2 instances across multiple Availability Zones and is managed by an internal Application Load Balancer (ALB). Clients access the application via HTTPS from the on-premises network, with TLS termination occurring at the ALB. The ALB employs path-based routing to direct requests to various target groups based on the URL path. The company plans to implement an on-premises firewall appliance that uses an IP-based allow list. A solutions architect needs to devise a strategy to ensure uninterrupted access to the AWS application for the clients. Which solution fulfills these requirements?
A
Configure the existing ALB to use static IP addresses. Assign IP addresses in multiple Availability Zones to the ALB. Add the ALB IP addresses to the firewall appliance.
B
Create a Network Load Balancer (NLB). Associate the NLB with one static IP address in multiple Availability Zones. Create an ALB-type target group for the NLB and add the existing ALB. Add the NLB IP addresses to the firewall appliance. Update the clients to connect to the NLB.
C
Create a Network Load Balancer (NLB). Associate the NLB with one static IP address in multiple Availability Zones. Add the existing target groups to the NLB. Update the clients to connect to the NLB. Delete the ALB. Add the NLB IP addresses to the firewall appliance.
D
Create a Gateway Load Balancer (GWLB). Assign static IP addresses to the GWLB in multiple Availability Zones. Create an ALB-type target group for the GWLB and add the existing ALB. Add the GWLB IP addresses to the firewall appliance. Update the clients to connect to the GWLB.