"Your company is building a highly available and secure web application on OCI.

Deploy at least three web servers in different fault domains within a public subnet, each with a public IP address. Deploy Web Application Firewall (WAF), and configure an origin for each public IP.

Deploy at least three web servers in different fault domains within a private subnet. Place a public load balancer in a public subnet, but skip WAF configuration.

Deploy at least three web servers in different fault domains within a private subnet. Place a public load balancer in a public subnet and configure a back-end set for all web servers. Deploy Web Application Firewall (WAF) and set the load balancer public IP address as the origin.

Deploy at least three web servers in different fault domains within a public subnet. Use OCI Traffic Management service for DNS-based load balancing."