You must deploy a virtual inline L7 security appliance for URL filtering in us-west1 within a Shared VPC architecture. Which deployment meets this requirement?

The correct option describes deploying a security appliance as a 2-NIC VM within the Shared VPC Host Project, acting as a "bump in the wire" between two separate VPCs. This setup allows traffic to be steered through the appliance for L7 inspection (like URL filtering) before reaching its destination. The Host Project is the appropriate place for shared infrastructure like security appliances in a Shared VPC architecture. The second option is incorrect because the VM for shared infrastructure like a security appliance should reside in the Host Project, not a Service Project, to ensure centralized management and access to both VPCs. The third and fourth options are incorrect because an inline security appliance requires at least two distinct network interfaces, each connected to a separate network segment (VPC or subnet) to intercept and forward traffic. Using a single VPC or attaching both NICs to subnets within the same VPC does not create the necessary inline traffic path for a security appliance.