Google Professional-Cloud-Network-Engineer Based on Real Exam Environment

https://cloud.google.com/interconnect/docs/ how-to/dedicated/using-interconnects-other-projects

Using Cloud Interconnect with Shared VPC You can use Shared VPC to share your VLAN attachment in a project with other VPC networks. Choosing Shared VPC is preferable if you need to create many projects and would like to prevent individual project owners from managing their connectivity back to your on-premises network. In this scenario, the host project contains a common Shared VPC network usable by VMs in service projects. Because VMs in the service projects use this network, Service Project Admins don't need to create other VLAN attachments or Cloud Routers in the service projects. In this scenario, you must create VLAN attachments and Cloud Routers for a Cloud Interconnect connection only in the Shared VPC host project. The combination of a VLAN attachment and its associated Cloud Router are unique to a given Shared VPC network. https://cloud.google.com/network-connectivity/docs/interconnect/how-to/enabling-multiple-networks-access-same-attachment#using_with

https://cloud.google.com/vpc/ docs/shared-vpc

For secure traffic over Cloud Interconnect, you configure an HA VPN gateway to work with existing VLAN attachments and use the same Cloud Router. This setup integrates seamlessly, leveraging the established BGP sessions for VPN tunnel configurations.

The correct answer is B and C. You must create firewall rules for health checks and reserve a static IP address for the load balancer before creating the internal HTTP(S) load balancer.

The other options are not correct because:

Option A is not a prerequisite task. You can choose a region when you create the load balancer, but you do not need to do it beforehand.

Option D is not a prerequisite task. You can determine the subnet mask for a proxy-only subnet when you create the subnet, but you do not need to do it beforehand.

Option E is not related to the internal HTTP(S) load balancer. Serverless VPC Access is a feature that allows you to connect your serverless applications to your VPC network, but it is not required for the load balancer.