Professional-Cloud-Network-Engineer Exam Dumps - Google Cloud Certified - Professional Cloud Network Engineer

Explanation: VPC Network Peering is the most cost-effective and high-performance method for connecting two VPCs. Since one VPC uses privately used public IP (PUPI) ranges, you need to configure peering to allow the export and import of subnet routes with public IP addresses. Firewall rules can be used to control traffic between the resources.

For GKE pods that need to egress directly to the internet for most of their communications, the most cost-efficient and straightforward approach is to deploy a GKE cluster with public cluster nodes. Public nodes have external IP addresses, allowing pods to directly reach the internet. This eliminates the need for additional services like Cloud NAT or Secure Web Proxy for outbound internet access, which would incur extra costs and management overhead.

Exact Extract:

"Public clusters have nodes with external IP addresses, allowing them to directly initiate connections to the internet. This is the simplest configuration for clusters that require direct internet egress for their workloads."

"When using public clusters, Cloud NAT is not required for outbound internet connectivity from the nodes or pods, as they can use their external IP addresses. This can reduce operational overhead and cost compared to private clusters that need NAT."Reference: Google Kubernetes Engine Documentation - Cluster network configuration, Public clusters vs Private clusters

The correct answer is D because it meets the following requirements:

It matches the hub-and-spoke model of the on-premises network, where each spoke is a separate VPC network that is connected to a central hub VPC network.

It minimizes management overhead and cost, because VPC Network Peering is a simple and low-cost way to connect VPC networks without using any external IP addresses or VPN gateways1.

It uses default networking quotas and limits, because VPC Network Peering does not consume any quota or limit for VPN tunnels, external IP addresses, or forwarding rules2.

It prevents connectivity between the spokes, because VPC Network Peering is non-transitive by default, meaning that a spoke can only communicate with the hub, not with other spokes1. To enforce this restriction, a third-party network appliance can be used as a default gateway in each spoke VPC network, which can filter out any traffic destined for other spokes3.

Option A is incorrect because it does not minimize cost, as Cloud VPN charges for egress traffic and requires external IP addresses for the VPN gateways4. Option B is incorrect because it does not prevent connectivity between the spokes, as VPC Network Peering allows direct communication between peered VPC networks by default1. Option C is incorrect because it does not minimize cost or use default quotas and limits, for the same reasons as option A.

By default TCP/SSL proxy load balancer original client IP address and port information is not preserved, but it can be preserved using the PROXY protocol: https://cloud.google.com/load-balancing/docs/tcp#target-proxies

https://medium.com/google-cloud/preserving-client-ips-through-google-clouds-global-tcp-and-ssl-proxy-load-balancers-3697d76feeb1

The correct answer is D because it meets the following requirements:

Each internal project has its own Google Cloud project, which can be easily created and deleted by Terraform using the google_project resource1.

Each internal project has its own Google Cloud project owner, which can be assigned by Terraform using the google_project_iam_member resource1.

The deployment is simple and the code is reusable with centralized management, because the Shared VPC allows you to connect multiple service projects to a single host project that contains the network resources2. This way, you can use Terraform modules to create and manage the network resources in the host project, and then reference them in the service projects3.

Option A is incorrect because it does not create separate Google Cloud projects for each internal project, which makes it harder to delete the infrastructure and assign project owners. Option B is incorrect because it does not create separate Google Cloud projects for each internal project, and also because it attaches the service projects to a Shared VPC, which is not recommended for short-lived projects2. Option C is incorrect because it does not use a Shared VPC, which means that each internal project has to create and manage its own network resources, which increases complexity and reduces reusability.

https://cloud.google.com/network-connec tivity/docs/interconnect/how-to/dedicated/retrieving-loas

The requirement for the new division's network team to have "complete control over their networking infrastructure" while allowing communication between divisions and avoiding unnecessary permissions points directly to VPC Network Peering. This approach allows each division to manage its own VPC independently (in its own project), provides full control to the new division's network team within their project, and enables secure, private communication between the VPCs without traversing the public internet. Granting roles/compute.networkAdmin on their newly created project ensures they have the necessary control over their dedicated VPC. Using Shared VPC (option D) would centralize network administration under your existing project, which goes against the requirement of the new division having "complete control." VPN (option C) would incur additional costs and introduce more complexity than VPC peering for intra-Google Cloud connectivity. Option B is flawed because creating a subnet in the new VPC isn't directly relevant to granting permissions on the new project for VPC peering setup, and networkuser role on the new project alone wouldn't give complete network control.

Exact Extract:

"VPC Network Peering allows you to connect two VPC networks so that resources in each network can communicate with each other using internal IP addresses. Traffic stays within Google's network."

"Each side of a VPC Network Peering connection is configured independently. This means that each network administrator retains full control over their own network, including routes, firewalls, and network services."

"VPC Network Peering is ideal for scenarios where different organizations or divisions want to maintain separate network administrative domains while still allowing their resources to communicate privately."Reference: Google Cloud VPC Network Peering Documentation - Overview, Use cases