Google Cloud Network Engineer Sample Questions for Certification Success

Get exam-ready with expertly curated Google Cloud Network Engineer sample questions tailored to the certification exam blueprint. These practice questions cover key areas including Virtual Private Cloud (VPC) design, hybrid connectivity, network services, security, and automation. Whether you're a network professional or cloud architect aiming for the Professional Cloud Network Engineer certification, this resource provides hands-on experience through scenario-based questions that reflect the actual Google exam pattern. Perfect for validating your skills, assessing knowledge gaps, and boosting confidence before test day. Start preparing smarter and achieve success in your Google Cloud networking career.

Google Cloud Network Engineer Sample Questions List :

1. You have recently taken over responsibility for your organization's Google Cloud network security configurations. You want to review your Cloud Next Generation Firewall (Cloud NGFW) configurations and ensure there are no rules that are allowing ingress traffic to your VMs and services from the internet. You want to avoid manual work. What should you do?

1. Enable the Network Analyzer API and review the "VPC Network" category insights

2. Review the firewall policy rules associated with the VPC, and filter for rules that allow ingress from 0.0.0.0/0.

3. Run Connectivity Tests from multiple external sources to double-check ingress traffic settings

4. Enable "Overly permissive rules insights" in Firewall Insights. Review results for rules that show allowed ingress traffic from internet sources

2. You have an application running on Compute Engine that uses BigQuery to generate some results that are stored in Cloud Storage. You want to ensure that none of the application instances have external IP addresses. Which two methods can you use to accomplish this? (Choose two.)

1. Enable Private Google Access on the VPC

2. Enable Private Google Access on all the subnets

3. Create network peering between your VPC and BigQuery

4. Create a Cloud NAT, and route the application traffic via NAT gateway

5. Enable Private Services Access on the VPC

3. You have two Google Cloud projects in a perimeter to prevent data exfiltration. You need to move a third project inside the perimeter; however, the move could negatively impact the existing environment. You need to validate the impact of the change. What should you do?

1. Enable Firewall Rules Logging inside the third project

2. Modify the existing VPC Service Controls policy to include the new project in dry run mode

3. Enable VPC Flow Logs inside the third project, and monitor the logs for negative impact

4. Monitor the Resource Manager audit logs inside the perimeter

4. You created a new VPC network named Dev with a single subnet. You added a firewall rule for the network Dev to allow HTTP traffic only and enabled logging. When you try to log in to an instance in the subnet via Remote Desktop Protocol, the login fails. You look for the Firewall rules logs in Stackdriver Logging, but you do not see any entries for blocked traffic. You want to see the logs for blocked traffic. What should you do?

1. Create a new firewall rule with priority 65500 to deny all traffic, and enable logs

2. Try connecting to the instance via SSH, and check the logs

3. Check the VPC flow logs for the instance

4. Create a new firewall rule to allow traffic from port 22, and enable logs

5. You are implementing a VPC architecture for your organization by using a Network Connectivity Center hub and spoke topology: • There is one Network Connectivity Center hybrid spoke to receive on-premises routes. • There is one VPC spoke that needs to be added as a Network Connectivity Center spoke. Your organization has limited routable IP space for their cloud environment (192.168.0.0/20). The Network Connectivity Center spoke VPC is connected to on-premises with a Cloud Interconnect connection in the us-east4 region. The on-premises IP range is 172.16.0.0/16. You need to reach on-premises resources from multiple Google Cloud regions (us-west1,europe-central1, and asia-southeast1) and minimize the IP addresses being used. What should you do?

1. 1. Configure a Private NAT gateway and NAT subnet in us-west1(192.168.1.0/24), europe-central1(192.168.2.0/24) and asia-southeast1(192.168.3.0/24). 2. Add the VPC as a spoke and configure an export include policy to advertise only 192.168.1.0/24, 192.168.2.0/24, and 192.168.3.0/24 to the hub. 3. Enable global dynamic routing to allow resources in us-west1, us-central1 and asia-southeast1 to reach the on-premises location through us-east4

2. 1. Configure a Private NAT gateway instance in us-west1(192.168.1.0/24), europe-central1(192.168.2.0/24), and asia-southeast1(192.168.3.0/24). 2. Add the VPC as a spoke and configure an export exclude policy on the VPC spoke to advertise only the NAT subnets 192.168.1.0/24, 192.168.2.0/24, and 192.168.3.0/24 to the hub. 3. Enable global dynamic routing to allow resources in us-west1, us-central1, and asia-southeast1 to reach the on-premises location through us-east4

3. 1. Configure a Private NAT gateway instance in us-west1(172.16.1.0/24), europe-central1(172.16.2.0/24), and asia-southeast1(172.16.3.0/24). 2. Add the VPC as a spoke and configure an export include policy on the VPC spoke to advertise only the NAT subnets 172.16.1.0/24, 172.16.2.0/24, and 172.16.3.0/24 to the hub. 3. Enable global dynamic to allow resources in us-west1, us-central1, and asia-southeast1 to reach the on-premises location through us-east4

4. 1. Configure a Private NAT gateway instance in us-east4(192.168.1.0/24). 2. Add the VPC as a spoke and configure an export include policy on the VPC spoke to advertise 192.168.1.0/24 to the hub. 3. Enable global dynamic routing to allow resources in us-west1, us-central1 and asia-southeast1 to reach the on-premises location through us-east4

6. You have deployed an HTTP(s) load balancer, but health checks to port 80 on the Compute Engine virtual machine instance are failing, and no traffic is sent to your instances. You want to resolve the problem. Which commands should you run?

1. gcloud compute firewall-rules create allow-lb --network load-balancer --allow tcp --destination-ranges 130.211.0.0/22,35.191.0.0/16 --direction EGRESS

2. gcloud compute instances add-access-config instance-1

3. gcloud compute firewall-rules create allow-lb --network load-balancer --allow tcp --source-ranges 130.211.0.0/22,35.191.0.0/16 --direction INGRESS

4. gcloud compute health-checks update http health-check --unhealthy-threshold 10

7. You recently reviewed the user behavior for your main application, which uses an external global Application Load Balancer, and found that the backend servers were overloaded due to erratic spikes in the rate of client requests. You need to limit the concurrent sessions and return an HTTP 429 Too Many Requests response back to the client while following Google-recommended practices. What should you do?

1. Create a Cloud Armor security policy, and associate the policy with the load balancer. Configure the security policy's settings as follows: action: throttle; conform action: allow; exceed action: deny-429

2. Configure the load balancer to accept only the defined amount of requests per client IP address, increase the backend servers to support more traffic, and redirect traffic to a different backend to burst traffic

3. Create a Cloud Armor security policy, and apply the predefined Open Worldwide Security Application Project (OWASP) rules to automatically implement the rate limit per client IP address

4. Configure a VM with Linux, implement the rate limit through iptables, and use a firewall rule to send an HTTP 429 response to the client application

8. Your organization's current architecture has one Shared VPC host project (SH_HOST_PRJ) that contains a single VPC (SH_VPC) and two Shared VPC service projects (SP_ONE_PRJ and SP_TWO_PRJ) that do not contain any VPCs. Each Shared VPC service project belongs to a different team: TEAM_ONE manages SP_ONE_PRJ and TEAM_TWO manages SP_TWO_PRJ. You must design a solution that allows each team to create their own DNS private zones and DNS records only in their respective Shared VPC service projects. Workloads in SP_ONE_PRJ must be able to resolve all the DNS private zones defined in SP_TWO_PRJ and conversely. Your design must have the least amount of set up effort. What should you do?

1. 1. TEAM_ONE creates a new VPC (SP_ONE_VPC) in the Shared VPC service projects (SP_ONE_PRJ). TEAM_ONE creates Cloud DNS private zones and DNS records in SP_ONE_PRJ, and binds the zones to the new VPC (SP_ONE_VPC). TEAM_ONE creates a VPC Network Peering relationship between SP_ONE_VPC and the VPC (SH_VPC) in the Shared VPC host project (SH_HOST_PRJ). 2. TEAM_TWO completes the same actions for the SP_TWO_PRJ project

2. 1. TEAM_ONE uses cross-project binding and creates Cloud DNS private zones and DNS records in SP_ONE_PRJ, and binds the zones to the Shared VPC host project (SH_HOST_PRJ). 2. TEAM_TWO creates Cloud DNS private zones and DNS records in SP_TWO_PRJ, and uses cross-project binding to connect the zones to the Shared VPC host project (SH_HOST_PRJ)

3. 1. TEAM_ONE uses cross-project binding and creates Cloud DNS private zones and DNS records in SP_ONE_PRJ, and binds the zones to the VPC (SH_VPC) in the Shared VPC host project (SH_HOST_PRJ). 2. TEAM_TWO creates DNS private zones and DNS records in SP_TWO_PRJ and uses cross-project binding to connect the zones to the VPC (SH_VPC) in the Shared VPC host project (SH_HOST_PRJ)

4. 1. TEAM_ONE creates a new VPC (SP_ONE_VPC) in the Shared VPC service projects (SP_ONE_PRJ). TEAM_ONE creates Cloud DNS private zones and DNS records in SP_ONE_PRJ, and binds the zones to the new VPC (SP_ONE_VPC). TEAM_ONE creates a Cloud DNS peering relationship between SP_ONE_VPC and the VPC (SH_VPC) in the Shared VPC host project (SH_HOST_PRJ). 2. TEAM_TWO completes the same actions for the SP_TWO_PRJ project

9. You have configured Cloud CDN using HTTP(S) load balancing as the origin for cacheable content. Compression is configured on the web servers, but responses served by Cloud CDN are not compressed. What is the most likely cause of the problem?

1. The web servers behind the load balancer are configured with different compression types

2. You have to configure the web servers to compress responses even if the request has a Via header

3. You have configured the web servers and Cloud CDN with different compression types

4. You have not configured compression in Cloud CDN

10. Your company deployed a hub and spoke architecture in Google Cloud to host their workloads. They use VPC network peerings to connect the hub and the spokes. You need to replicate the design and use Network Connectivity Center. What should you do?

1. Choose a Network Connectivity Center mesh topology. Configure the spokes as Network Connectivity Center spokes

2. Choose a Network Connectivity Center star topology. Deploy the hub VPC in the center group. Deploy the spoke VPCs in the edge group

3. Choose a Network Connectivity Center mesh topology. Configure the hub and the spokes as Network Connectivity Center spokes

4. Choose a Network Connectivity Center star topology. Deploy the spoke VPCs in the center group. Deploy the hub VPC in the edge group

11. You have configured a Compute Engine virtual machine instance as a NAT gateway. You execute the following command: gcloud compute routes create no-ip-internet-route \ --network custom-network1 \ --destination-range 0.0.0.0/0 \ --next-hop instance nat-gateway \ --next-hop instance-zone us-central1-a \ --tags no-ip --priority 800 You want existing instances to use the new NAT gateway. Which command should you execute?

1. gcloud compute instances add-tags [existing-instance] --tags no-ip

2. sudo sysctl -w net.ipv4.ip_forward=1

3. gcloud builds submit --config=cloudbuild.waml --substitutions=TAG_NAME=no-ip

4. gcloud compute instances create example-instance --network custom-network1 \ --subnet subnet-us-central \ --no-address \ --zone us-central1-a \ --image-family debian-9 \ --image-project debian-cloud \ --tags no-ip

12. Your organization wants to deploy HA VPN over Cloud Interconnect to ensure encryption-in-transit over the Cloud Interconnect connections. You have created a Cloud Router and two VLAN attachments. The BGP sessions are operational. You need to complete the deployment of the HA VPN over Cloud Interconnect. What should you do?

1. Create an HA VPN gateway and associate the gateway with your two VLAN attachments. Use the existing Cloud Router for HA VPN, the peer VPN gateway resources, and the HA VPN tunnels

2. Create an HA VPN gateway and associate the gateway with your two VLAN attachments. Create a new Cloud Router for HA VPN, the peer VPN gateway resources, and the HA VPN tunnels

3. Enable MACsec on Partner Cloud Interconnect

4. Enable MACsec on the VLAN attachments

13. Your organization has a hub and spoke architecture with VPC Network Peering, and hybrid connectivity is centralized at the hub. The Cloud Router in the hub VPC is advertising subnet routes, but the on-premises router does not appear to be receiving any subnet routes from the VPC spokes. You need to resolve this issue. What should you do?

1. Create custom routes at the Cloud Router in the hub to advertise the subnets of the VPC spokes

2. Create a BGP route policy at the Cloud Router, and ensure the subnets of the VPC spokes are being announced towards the on-premises environment

3. Create custom learned routes at the Cloud Router in the hub to advertise the subnets of the VPC spokes

4. Create custom routes at the Cloud Router in the spokes to advertise the subnets of the VPC spokes

14. You have deployed a new internal application that provides HTTP and TFTP services to on-premises hosts. You want to be able to distribute traffic across multiple Compute Engine instances, but need to ensure that clients are sticky to a particular instance across both services. Which session affinity should you choose?

1. Client IP

2. None

3. Client IP, port and protocol

4. Client IP and protocol

15. You are using the gcloud command line tool to create a new custom role in a project by coping a predefined role. You receive this error message: INVALID_ARGUMENT: Permission resourcemanager.projects.list is not valid What should you do?

1. Add the resourcemanager.projects.setIamPolicy permission, and try again

2. Add the resourcemanager.projects.get permission, and try again

3. Try again with a different role with a new name but the same permissions

4. Remove the resourcemanager.projects.list permission, and try again

16. You are configuring a new HTTP application that will be exposed externally behind both IPv4 and IPv6 virtual IP addresses, using ports 80, 8080, and 443. You will have backends in two regions: us-west1 and us-east1. You want to serve the content with the lowest-possible latency while ensuring high availability and autoscaling, and create native content-based rules using the HTTP hostname and request path. The IP addresses of the clients that connect to the load balancer need to be visible to the backends. Which configuration should you use?

1. Use External HTTP(S) Load Balancing with URL Maps and an X-Forwarded-For header

2. Use External HTTP(S) Load Balancing with URL Maps and custom headers

3. Use Network Load Balancing

4. Use TCP Proxy Load Balancing with PROXY protocol enabled

17. You are responsible for designing a new connectivity solution between your organization's on-premises data center and your Google Cloud Virtual Private Cloud (VPC) network. Currently, there is no end-to-end connectivity. You must ensure a service level agreement (SLA) of 99.99% availability. What should you do?

1. Use two Dedicated Interconnect connections in a single metropolitan area. Configure one Cloud Router and enable global routing in the VPC

2. Use a Direct Peering connection between your on-premises data center and Google Cloud. Configure Classic VPN with two tunnels and one Cloud Router

3. Use one Dedicated Interconnect connection in a single metropolitan area. Configure one Cloud Router and enable global routing in the VPC

4. Use HA VPN. Configure one tunnel from each interface of the VPN gateway to connect to the corresponding interfaces on the peer gateway on-premises. Configure one Cloud Router and enable global routing in the VPC

18. You are configuring an HA VPN connection between your Virtual Private Cloud (VPC) and on-premises network. The VPN gateway is named VPN_GATEWAY_1. You need to restrict VPN tunnels created in the project to only connect to your on-premises VPN public IP address: 203.0.113.1/32. What should you do?

1. Configure an access control list on the peer VPN gateway to deny all traffic except 203.0.113.1/32, and attach it to the primary external interface

2. Configure a firewall rule accepting 203.0.113.1/32, and set a target tag equal to VPN_GATEWAY_1

3. Configure a Google Cloud Armor security policy, and create a policy rule to allow 203.0.113.1/32.

4. Configure the Resource Manager constraint constraints/compute.restrictVpnPeerIPs to use an allowList consisting of only the 203.0.113.1/32 address

19. Your organization has over 250 autonomous business units that currently operate in a decentralized manner. Due to the organization's maturity, there is limited routable private IP address space, which is insufficient to accommodate all of the necessary workloads. You need to create a cloud-first network design that uses the same IP address space across business unit workloads where possible. These business units require communication between units, and access to their on-premises data center. What should you do?

1. Create a hub and spoke design that incorporates a centralized network virtual appliance (NVA) in the hub to perform routing and NAT between spokes

2. Create a hub and spoke model that incorporates VPC Network Peering with hybrid connectivity centralized within the hub

3. Create a Network Connectivity Center design that incorporates Private NAT to facilitate communication between VPC spokes, and a Routing VPC to exchange dynamic routes from the on-premises environment

4. Create a Network Connectivity Center design that incorporates Private Service Connect to provide bidirectional communication between VPC spokes, and a Routing VPC to exchange dynamic routes from the on-premises environment

20. Your on-premises data center has 2 routers connected to your Google Cloud environment through a VPN on each router. All applications are working correctly; however, all of the traffic is passing across a single VPN instead of being load-balanced across the 2 connections as desired. During troubleshooting you find: "¢ Each on-premises router is configured with a unique ASN. "¢ Each on-premises router is configured with the same routes and priorities. "¢ Both on-premises routers are configured with a VPN connected to a single Cloud Router. "¢ BGP sessions are established between both on-premises routers and the Cloud Router. "¢ Only 1 of the on-premises router's routes are being added to the routing table. What is the most likely cause of this problem?

1. The on-premises routers are configured with the same routes

2. You do not have a load balancer to load-balance the network traffic

3. The ASNs being used on the on-premises routers are different

4. A firewall is blocking the traffic across the second VPN connection

21. Your company uses VPC firewall rules and denies all egress traffic. You need to allow some VMs to contact external websites based on their fully qualified domain name (FQDN). You apply the new configuration, but the traffic is still denied. You need to adjust your setup to apply the new configuration. What would you do?

1. Update the default policy and rule evaluation order to AFTER_CLASSIC_FIREWALL

2. Raise the priority of the network firewall policy rules

3. Lower the priority of the network firewall policy rules

4. Update the default policy and rule evaluation order to BEFORE_CLASSIC_FIREWALL

22. You are designing a new application that has backends internally exposed on port 800. The application will be exposed externally using both IPv4 and IPv6 via TCP on port 700. You want to ensure high availability for this application. What should you do?

1. Create a TCP proxy that uses backend services containing an instance group with two instances

2. Create a network load balancer that uses a target pool backend with two instances

3. Create a network load balancer that used backend services containing one instance group with two instances

4. Create a TCP proxy that uses a zonal network endpoint group containing one instance

23. You need to enable Private Google Access for use by some subnets within your Virtual Private Cloud (VPC). Your security team set up the VPC to send all internet-bound traffic back to the on- premises data center for inspection before egressing to the internet, and is also implementing VPC Service Controls in the environment for API-level security control. You have already enabled the subnets for Private Google Access. What configuration changes should you make to enable Private Google Access while adhering to your security team’s requirements?

1. 1. Create a private DNS zone with a CNAME record for *.googleapis.com to restricted.googleapis.com, with an A record pointing to Google's restricted API address range. 2. Create a custom route that points Google's restricted API address range to the default internet gateway as the next hop

2. 1. Create a private DNS zone with a CNAME record for *.googleapis.com to restricted.googleapis.com, with an A record pointing to Google's restricted API address range. 2. Change the custom route that points the default route (0/0) to the default internet gateway as the next hop

3. 1. Create a private DNS zone with a CNAME record for *.googleapis.com to private.googleapis.com, with an A record painting to Google's private AP address range. 2. Change the custom route that points the default route (0/0) to the default internet gateway as the next hop

4. 1. Create a private DNS zone with a CNAME record for *.googleapis.com to private.googleapis.com, with an A record pointing to Google's private API address range. 2. Create a custom route that points Google's private API address range to the default internet gateway as the next hop

24. Your organization wants to deploy HA VPN over Cloud Interconnect to ensure encryption-in-transit over the Cloud Interconnect connections. You have created a Cloud Router and two encrypted VLAN attachments that have a 5 Gbps capacity and a BGP configuration. The BGP sessions are operational. You need to complete the deployment of the HA VPN over Cloud Interconnect. What should you do?

1. Create an HA VPN gateway and associate the gateway with your two encrypted VLAN attachments. Configure the HA VPN Cloud Router, peer VPN gateway resources, and HA VPN tunnels. Use the same encrypted Cloud Router used for the Cloud Interconnect tier

2. Enable MACsec for Cloud Interconnect on the VLAN attachments

3. Create an HA VPN gateway and associate the gateway with your two encrypted VLAN attachments. Create a new dedicated HA VPN Cloud Router, peer VPN gateway resources, and HA VPN tunnels

4. Enable MACsec on Partner Interconnect

25. You are developing an HTTP API hosted on a Compute Engine virtual machine instance that must be invoked only by multiple clients within the same Virtual Private Cloud (VPC). You want clients to be able to get the IP address of the service. What should you do?

1. Reserve a static external IP address and assign it to an HTTP(S) load balancing service's forwarding rule. Clients should use this IP address to connect to the service

2. Ensure that clients use Compute Engine internal DNS by connecting to the instance name with the url https://[INSTANCE_NAME].[ZONE].c.[PROJECT_ID].internal/

3. Ensure that clients use Compute Engine internal DNS by connecting to the instance name with the url https://[API_NAME]/[API_VERSION]/

4. Reserve a static external IP address and assign it to an HTTP(S) load balancing service's forwarding rule. Then, define an A record in Cloud DNS. Clients should use the name of the A record to connect to the service

FAQs

1. What is the Google Professional Cloud Network Engineer certification exam?

The Google Professional Cloud Network Engineer exam validates your ability to design, implement, and manage network architectures on Google Cloud.

2. How do I become a Google Professional Cloud Network Engineer certified professional?

You must pass the Professional Cloud Network Engineer exam, which tests your skills in networking, hybrid connectivity, and optimizing Google Cloud networks.

3. What are the prerequisites for the Google Professional Cloud Network Engineer exam?

There are no formal prerequisites, but Google recommends 3+ years of industry experience including 1+ year of hands-on work with Google Cloud.

4. How much does the Google Professional Cloud Network Engineer certification cost?

The exam costs $200 USD, but pricing may vary by region or currency.

5. How many questions are in the Google Professional Cloud Network Engineer exam?

The exam consists of 50–60 multiple-choice and multiple-select questions, with a 2-hour time limit.

6. What topics are covered in the Google Professional Cloud Network Engineer exam?

It covers VPC design, hybrid connectivity, network services, security, load balancing, and automation.

7. How difficult is the Google Professional Cloud Network Engineer certification exam?

It’s an intermediate to advanced-level exam, requiring strong networking and Google Cloud experience.

8. How long does it take to prepare for the Google Professional Cloud Network Engineer exam?

Most candidates take 8–10 weeks to prepare thoroughly, depending on their background in networking.

9. What jobs can I get after earning the Google Professional Cloud Network Engineer certification?

You can work as a Cloud Network Engineer, Network Architect, or Infrastructure Engineer specializing in Google Cloud solutions.

10. How much salary can I earn with a Google Professional Cloud Network Engineer certification?

Certified professionals typically earn between $110,000–$150,000 per year, depending on role and experience.