Free Google Professional-Cloud-Network-Engineer Exam Practice Questions & Explanations

Last updated on: Oct 11, 2026
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Question 1

Your company recently migrated to Google Cloud in a Single region. You configured separate Virtual Private Cloud (VPC) networks for two departments. Department A and Department B. Department A has requested access to resources that are part Of Department Bis VPC. You need to configure the traffic from private IP addresses to flow between the VPCs using multi-NIC virtual machines (VMS) to meet security requirements Your configuration also must

* Support both TCP and UDP protocols

* Provide fully automated failover

* Include health-checks

Require minimal manual Intervention In the client VMS

Which approach should you take?

Answer Options
Correct Answer: D
Explanation

The correct answer is D. Create an instance template and a managed instance group. Configure two separate internal TCP/UDP load balancers for each protocol (TCP/UDP), and configure the client VMs to use the internal load balancers' virtual IP addresses.

This answer is based on the following facts:

Using multi-NIC VMs as network virtual appliances (NVAs) allows you to route traffic between different VPC networks1. You can use NVAs to implement custom network policies and security requirements.

Using an instance template and a managed instance group allows you to create and manage multiple identical NVAs2. You can also use health checks and autoscaling policies to ensure high availability and reliability of your NVAs.

Using internal TCP/UDP load balancers allows you to distribute traffic from client VMs to NVAs based on the protocol and port3. You can also use health checks and failover policies to ensure that only healthy NVAs receive traffic.

Configuring the client VMs to use the internal load balancers' virtual IP addresses allows you to simplify the routing configuration and avoid manual intervention4. You do not need to create static routes or update them when NVAs are added or removed.

The other options are not correct because:

Option A is not suitable. Creating the VMs in the same zone does not provide high availability or failover. Using static routes with IP addresses as next hops requires manual intervention when NVAs are added or removed.

Option B is not optimal. Creating the VMs in different zones provides high availability, but not failover. Using static routes with instance names as next hops requires manual intervention when NVAs are added or removed.

Option C is not feasible. Creating an instance template and a managed instance group provides high availability and reliability, but using a single internal load balancer does not support both TCP and UDP protocols. You cannot define a custom static route with an internal load balancer as the next hop.

Question 2

Your organization recently exposed a set of services through a global external Application Load Balancer. After conducting some testing, you observed that responses would intermittently yield a non-HTTP 200 response. You need to identify the error. What should you do? (Choose 2 answers)

Answer Options
Correct Answer: B, C
Explanation

To identify errors with intermittent non-HTTP 200 responses:

Enable and review health check logs for your backend to identify potential issues with backend availability or connectivity (Option B).

Enable logging on the load balancer and review Cloud Logging, particularly the statusDetails field, to gather insights on error types and sources (Option C).

These steps allow for precise error identification by leveraging both health checks and detailed logging features available through Google Cloud's external load balancer diagnostics.

Question 3

You need to configure the Border Gateway Protocol (BGP) session for a VPN tunnel you just created between two Google Cloud VPCs, 10.1.0.0/16 and 172.16.0.0/16. You have a Cloud Router (router-1) in the 10.1.0.0/16 network and a second Cloud Router (router-2) in the 172.16.0.0/16 network. Which configuration should you use for the BGP session?

A.

B.

C.

D.

Answer Options
Correct Answer: C
Question 4

You created a new VPC for your development team. You want to allow access to the resources in this VPC via SSH only.

How should you configure your firewall rules?

Answer Options
Correct Answer: C
Question 5

Your organization has a single project that contains multiple Virtual Private Clouds (VPCs). You need to secure API access to your Cloud Storage buckets and BigQuery datasets by allowing API access only from resources in your corporate public networks. What should you do?

Answer Options
Correct Answer: B