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

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.

References:

VPC Network Peering overview | VPC

Quotas and limits | VPC

Hub-and-spoke network architecture | Cloud Architecture Center

Cloud VPN overview | Google Cloud

Cloud Armour is applied at load balancers Configuring Google Cloud Armor through Ingress. https://cloud.google.com/kubernetes-engine/docs/how-to/ingress-features Security policy features Google Cloud Armor security policies have the following core features: You can optionally use the QUIC protocol with load balancers that use Google Cloud Armor. You can use Google Cloud Armor with external HTTP(S) load balancers that are in either Premium Tier or Standard Tier. You can use security policies with GKE and the default Ingress controller.

The Performance Dashboard in the Network Intelligence Center provides a detailed view of network latency and performance metrics. For inter-region latency issues, you can quickly identify round-trip times (RTT) and latency using this tool by selecting the specific regions and network tiers, which allows you to diagnose any anomalies or patterns impacting performance.

Cloud NGFW Enterprise provides TLS inspection to detect and manage threats within encrypted traffic. Configuring firewall rules for TLS inspection enables granular monitoring and filtering, ensuring secure internet traffic.

The correct answer is C. Create a single Shared VPC and attach each Google Cloud project as a service project.

This answer is based on the following facts:

A Shared VPC allows you to share one or more VPC networks across multiple Google Cloud projects1. This simplifies the deployment and management of the network infrastructure, as you only need to create and maintain one VPC network for all your internal projects.

A Shared VPC consists of a host project that owns the VPC network and one or more service projects that use the VPC network2. You can attach and detach service projects as needed, depending on the lifecycle of your internal projects. You can also delete service projects without affecting the host project or other service projects.

A Shared VPC allows you to delegate administrative roles to different project owners3. You can grant the Shared VPC Admin role to the owner of the host project, who can manage the VPC network and its subnets. You can also grant the Service Project Admin role to the owners of the service projects, who can manage the Google Cloud resources in their own projects.

The other options are not correct because:

Option A is not suitable. Creating a single project and additional VPCs for each internal project will increase the complexity and cost of the network infrastructure. You will need to create and maintain multiple VPC networks, firewall rules, routes, and VPN tunnels. You will also have a limit on the number of VPC networks per project4.

Option B is not feasible. Creating a single project and single VPC for each internal project will not meet the requirement of having separate project owners for each internal project. You will have only one project owner who can manage all the Google Cloud resources in the same project.

Option D is not optimal. Creating a Shared VPC and service project for each internal project will not meet the requirement of having a simple and reusable code with centralized management. You will need to create and maintain multiple Shared VPCs, which will increase the complexity and cost of the network infrastructure. You will also have more Terraform code to write and manage for each Shared VPC.

Understanding VPC Flow Logs:

VPC Flow Logs is a feature that captures information about the IP traffic going to and from network interfaces in a VPC. It helps in monitoring and analyzing network traffic, ensuring security, and optimizing network performance.

Current Configuration:

According to the diagram, VPC Flow Logs is already configured for Subnet-1 in the host VPC. This means that traffic information for Subnet-1 is being captured and logged.

Requirement for Subnet-2:

The goal is to monitor flow logs for Subnet-2, which is in the service project VPC.

Correct Configuration for Subnet-2:

To monitor the flow logs for Subnet-2, you need to configure VPC Flow Logs within the service project VPC where Subnet-2 resides. This is because VPC Flow Logs must be configured in the same project and VPC where the subnet is located.

Implementation Steps:

Go to the Google Cloud Console.

Navigate to the service project where Subnet-2 is located.

Select the VPC network containing Subnet-2.

Enable VPC Flow Logs for Subnet-2 by editing the subnet settings and enabling the flow logs option.

Cost and Performance Considerations:

Enabling VPC Flow Logs may incur additional costs based on the volume of data logged. Ensure to review and understand the pricing implications.

Analyze and manage the data collected to avoid unnecessary logging and costs.

References:

Google Cloud VPC Flow Logs Documentation

Configuring VPC Flow Logs

Shared VPC Overview

By configuring VPC Flow Logs in the service project VPC for Subnet-2, you ensure that traffic data is correctly captured and monitored, adhering to Google Cloud's best practices.

Direct Interconnect will be too expensive and also an overkill for this requirement. Managing multiple tunnels that too with packet loss consideration is complex also. Whereas partner interconnect fits the bill with providing required bandwidth but not super expensive also once setup not too complex too manage.