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Professional-Cloud-Network-Engineer Practice Questions

Question # 1

Your company has a single Virtual Private Cloud (VPC) network deployed in Google Cloud
with on-premises connectivity already in place. You are deploying a new application using
Google Kubernetes Engine (GKE), which must be accessible only from the same VPC
network and on-premises locations. You must ensure that the GKE control plane is
exposed to a predefined list of on-premises subnets through private connectivity only. What
should you do?

A.

Create a GKE private cluster with a private endpoint for the control plane. Configure
VPC Networking Peering export/import routes and custom route advertisements on the
Cloud Routers. Configure authorized networks to specify the desired on-premises subnets.

B.

Create a GKE private cluster with a public endpoint for the control plane. Configure VPC
Networking Peering export/import routes and custom route advertisements on the Cloud
Routers.

C.

Create a GKE private cluster with a private endpoint for the control plane. Configure
authorized networks to specify the desired on-premises subnets.

D.

Create a GKE public cluster. Configure authorized networks to specify the desired onpremises
subnets.



C.

Create a GKE private cluster with a private endpoint for the control plane. Configure
authorized networks to specify the desired on-premises subnets.




Question # 2

Your company has separate Virtual Private Cloud (VPC) networks in a single region for two
departments: Sales and Finance. The Sales department's VPC network already has
connectivity to on-premises locations using HA VPN, and you have confirmed that the
subnet ranges do not overlap. You plan to peer both VPC networks to use the same HA
tunnels for on-premises connectivity, while providing internet connectivity for the Google
Cloud workloads through Cloud NAT. Internet access from the on-premises locations
should not flow through Google Cloud. You need to propagate all routes between the
Finance department and on-premises locations. What should you do?

A.

Peer the two VPCs, and use the default configuration for the Cloud Routers.

B.

Peer the two VPCs, and use Cloud Router’s custom route advertisements to announce
the peered VPC network ranges to the on-premises locations.

C.

Peer the two VPCs. Configure VPC Network Peering to export custom routes from Sales
and import custom routes on Finance's VPC network. Use Cloud Router’s custom route
advertisements to announce a default route to the on-premises locations.

D.

Peer the two VPCs. Configure VPC Network Peering to export custom routes from Sales
and import custom routes on Finance's VPC network. Use Cloud Router’s custom route
advertisements to announce the peered VPC network ranges to the on-premises locations.



A.

Peer the two VPCs, and use the default configuration for the Cloud Routers.




Question # 3

In your Google Cloud organization, you have two folders: Dev and Prod. You want a
scalable and consistent way to enforce the following firewall rules for all virtual machines
(VMs) with minimal cost:
Port 8080 should always be open for VMs in the projects in the Dev folder.
Any traffic to port 8080 should be denied for all VMs in your projects in the Prod folder.
What should you do?

A.

Create and associate a firewall policy with the Dev folder with a rule to open port 8080.
Create and associate a firewall policy with the Prod folder with a rule to deny traffic to port 8080.

B.

Create a Shared VPC for the Dev projects and a Shared VPC for the Prod projects.
Create a VPC firewall rule to open port 8080 in the Shared VPC for Dev. Create a firewall
rule to deny traffic to port 8080 in the Shared VPC for Prod. Deploy VMs to those Shared
VPCs.

C.

In all VPCs for the Dev projects, create a VPC firewall rule to open port 8080. In all
VPCs for the Prod projects, create a VPC firewall rule to deny traffic to port 8080.

D.

Use Anthos Config Connector to enforce a security policy to open port 8080 on the Dev
VMs and deny traffic to port 8080 on the Prod VMs.



A.

Create and associate a firewall policy with the Dev folder with a rule to open port 8080.
Create and associate a firewall policy with the Prod folder with a rule to deny traffic to port 8080.




Question # 4

Your company has defined a resource hierarchy that includes a parent folder with
subfolders for each department. Each department defines their respective project and VPC
in the assigned folder and has the appropriate permissions to create Google Cloud firewall
rules. The VPCs should not allow traffic to flow between them. You need to block all traffic
from any source, including other VPCs, and delegate only the intra-VPC firewall rules to the
respective departments. What should you do?

A.

Create a VPC firewall rule in each VPC to block traffic from any source, with priority 0.

B.

Create a VPC firewall rule in each VPC to block traffic from any source, with priority
1000.

C.

Create two hierarchical firewall policies per department's folder with two rules in each: a
high-priority rule that matches traffic from the private CIDRs assigned to the respective
VPC and sets the action to allow, and another lower-priority rule that blocks traffic from any
other source.

D.

Create two hierarchical firewall policies per department's folder with two rules in each: a
high-priority rule that matches traffic from the private CIDRs assigned to the respective
VPC and sets the action to goto_next, and another lower-priority rule that blocks traffic from
any other source.



B.

Create a VPC firewall rule in each VPC to block traffic from any source, with priority
1000.




Question # 5

Your company has just launched a new critical revenue-generating web application. You
deployed the application for scalability using managed instance groups, autoscaling, and a
network load balancer as frontend. One day, you notice severe bursty traffic that the
caused autoscaling to reach the maximum number of instances, and users of your
application cannot complete transactions. After an investigation, you think it as a DDOS
attack. You want to quickly restore user access to your application and allow successful
transactions while minimizing cost.
Which two steps should you take? (Choose two.)

A.

Use Cloud Armor to blacklist the attacker’s IP addresses

B.

Increase the maximum autoscaling backend to accommodate the severe bursty traffic

C.

Create a global HTTP(s) load balancer and move your application backend to this load
balancer.

D.

Shut down the entire application in GCP for a few hours. The attack will stop when the
application is offline

E.

SSH into the backend compute engine instances, and view the auth logs and syslogs to
further understand the nature of the attack.



B.

Increase the maximum autoscaling backend to accommodate the severe bursty traffic


E.

SSH into the backend compute engine instances, and view the auth logs and syslogs to
further understand the nature of the attack.




Question # 6

You are deploying a global external TCP load balancing solution and want to preserve the
source IP address of the original layer 3 payload.
Which type of load balancer should you use?

A.

HTTP(S) load balancer

B.

Network load balancer

C.

Internal load balancer

D.

TCP/SSL proxy load balancer



D.

TCP/SSL proxy load balancer


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-tcpand-
ssl-proxy-load-balancers-3697d76feeb1
Reference: https://cloud.google.com/load-balancing/docs/network



Question # 7

You need to establish network connectivity between three Virtual Private Cloud networks,
Sales, Marketing, and Finance, so that users can access resources in all three VPCs. You
configure VPC peering between the Sales VPC and the Finance VPC. You also configure
VPC peering between the Marketing VPC and the Finance VPC. After you complete the
configuration, some users cannot connect to resources in the Sales VPC and the Marketing
VPC. You want to resolve the problem.
What should you do?

A.

Configure VPC peering in a full mesh.

B.

Alter the routing table to resolve the asymmetric route

C.

Create network tags to allow connectivity between all three VPCs.

D.

Delete the legacy network and recreate it to allow transitive peering.



A.

Configure VPC peering in a full mesh.




Question # 8

You successfully provisioned a single Dedicated Interconnect. The physical connection is
at a colocation facility closest to us-west2. Seventy-five percent of your workloads are in
us-east4, and the remaining twenty-five percent of your workloads are in us-central1. All
workloads have the same network traffic profile. You need to minimize data transfer costs
when deploying VLAN attachments. What should you do?

A.

Keep the existing Dedicated interconnect. Deploy a VLAN attachment to a Cloud Router
in us-west2, and use VPC global routing to access workloads in us-east4 and us-central1.

B.

Keep the existing Dedicated Interconnect. Deploy a VLAN attachment to a Cloud Router
in us-east4, and deploy another VLAN attachment to a Cloud Router in us-central1.

C.

Order a new Dedicated Interconnect for a colocation facility closest to us-east4, and use
VPC global routing to access workloads in us-central1.

D.

Order a new Dedicated Interconnect for a colocation facility closest to us-central1, and
use VPC global routing to access workloads in us-east4.



C.

Order a new Dedicated Interconnect for a colocation facility closest to us-east4, and use
VPC global routing to access workloads in us-central1.




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Google Professional-Cloud-Network-Engineer Exam Dumps

Exam Name: Google Cloud Certified - Professional Cloud Network Engineer
Certification Name: Google Cloud Platform

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  • Total Questions: 194
  • Last Updation Date: 17-Feb-2025

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