[2026年04月] 学習材料には有効なProfessional-Cloud-Network-Engineer効率的問題集！ [Q67-Q91]

質問 67
Your team is developing an application that will be used by consumers all over the world. Currently, the application sits behind a global external application load balancer You need to protect the application from potential application-level attacks. What should you do?

Enable Cloud CDN on the backend service.

Create multiple firewall deny rules to block malicious users, and apply them to the global external application load balancer

Create a Google Cloud Armor security policy With web application firewall rules, and apply the security policy to the backend service.

Create a VPC Service Controls perimeter with the global external application load balancer as the protected service, and apply it to the backend service

質問 68
Your on-premises data center has 2 routers connected to your GCP 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 the same 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.
* The VPN logs have no-proposal-chosen lines when the VPNs are connecting.
* BGP session is not established between one on-premises router and the Cloud Router.
What is the most likely cause of this problem?

One of the VPN sessions is configured incorrectly.

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

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

BGP sessions are not established between both on-premises routers and the Cloud Router.

質問 69
Question:
Your company’s current network architecture has three VPC Service Controls perimeters:
* One perimeter (PERIMETER_PROD) to protect production storage buckets
* One perimeter (PERIMETER_NONPROD) to protect non-production storage buckets
* One perimeter (PERIMETER_VPC) that contains a single VPC (VPC_ONE)
In this single VPC (VPC_ONE), the IP_RANGE_PROD is dedicated to the subnets of the production workloads, and the IP_RANGE_NONPROD is dedicated to subnets of non-production workloads. Workloads cannot be created outside those two ranges. You need to ensure that production workloads can access only production storage buckets and non-production workloads can access only non-production storage buckets with minimal setup effort. What should you do?

Develop a design that uses the IP_RANGE_PROD and IP_RANGE_NONPROD perimeters to create two access levels, with each access level referencing a single range. Create two ingress access policies with each access policy referencing one of the two access levels. Update the PERIMETER_PROD and PERIMETER_NONPROD perimeters.

Develop a design that removes the PERIMETER_VPC perimeter. Update the PERIMETER_NONPROD perimeter to include the project containing VPC_ONE. Remove the PERIMETER_PROD perimeter.

Develop a design that creates a new VPC (VPC_NONPROD) in the same project as VPC_ONE.
Migrate all the non-production workloads from VPC_ONE to the PERIMETER_NONPROD perimeter.
Remove the PERIMETER_VPC perimeter. Update the PERIMETER_PROD perimeter to include VPC_ONE and the PERIMETER_NONPROD perimeter to include VPC_NONPROD.

Develop a design that removes the PERIMETER_VPC perimeter. Update the PERIMETER_PROD perimeter to include the project containing VPC_ONE. Remove the PERIMETER_NONPROD perimeter.

質問 70
Your organization uses a Shared VPC architecture with a host project and three service projects. You have Compute Engine instances that reside in the service projects. You have critical workloads in your on-premises data center. You need to ensure that the Google Cloud instances can resolve on-premises hostnames via the Dedicated Interconnect you deployed to establish hybrid connectivity. What should you do?

Create a Cloud DNS private forwarding zone in the host project of the Shared VPC that forwards the private zone to the on-premises DNS servers.
In your Cloud Router, add a custom route advertisement for the IP 35.199.192.0/19 to the on-premises environment.

Create a Cloud DNS private forwarding zone in the host project of the Shared VPC that forwards the Private zone to the on-premises DNS servers.
In your Cloud Router, add a custom route advertisement for the IP 169.254 169.254 to the on-premises environment.

Configure a Cloud DNS private zone in the host project of the Shared VPC.
Set up DNS forwarding to your Google Cloud private zone on your on-premises DNS servers to point to the inbound forwarder IP address in your host project In your Cloud Router, add a custom route advertisement for the IP 169.254 169 254 to the on-premises environment.

Configure a Cloud DNS private zone in the host project of the Shared VPC.
Set up DNS forwarding to your Google Cloud private zone on your on-premises DNS servers to point to the inbound forwarder IP address in your host project.
Configure a DNS policy in the Shared VPC to allow inbound query forwarding with your on-premises DNS server as the alternative DNS server.

質問 71
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?

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.

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.

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.

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.

質問 72
You have several VMs across multiple VPCs in your cloud environment that require access to internet endpoints. These VMs cannot have public IP addresses due to security policies, so you plan to use Cloud NAT to provide outbound internet access. Within your VPCs, you have several subnets in each region. You want to ensure that only specific subnets have access to the internet through Cloud NAT. You want to avoid any unintentional configuration issues caused by other administrators and align to Google-recommended practices. What should you do?

Deploy Cloud NAT in each VPC and configure a custom source range that includes the allowed subnets. Configure Cloud NAT rules to only permit the allowed subnets to egress through Cloud NAT.

Create a firewall rule in each VPC at priority 500 that targets all instances in the network and denies egress to the internet (0.0.0.0/0). Create a firewall rule at priority 300 that targets all instances in the network, has a source filter that maps to the allowed subnets, and allows egress to the internet (0.0.0.0/0). Deploy Cloud NAT and configure all primary and secondary subnet source ranges.

Create a firewall rule in each VPC at priority 500 that targets all instances in the network and denies egress to the internet (0.0.0.0/0). Create a firewall rule at priority 300 that targets all instances in the network, has a source filter that maps to the allowed subnets, and allows egress to the internet (0.0.0.0/0). Deploy Cloud NAT and configure a custom source range that includes the allowed subnets.

Create a constraints/compute.restrictCloudNATUsage organizational policy constraint. Attach the constraint to a folder that contains the associated projects. Configure the allowedValues to only contain the subnets that should have internet access. Deploy Cloud NAT and select only the allowed subnets.

質問 73
You need to configure a static route to an on-premises resource behind a Cloud VPN gateway that is configured for policy-based routing using the gcloud command.
Which next hop should you choose?

The default internet gateway

The IP address of the Cloud VPN gateway

The name and region of the Cloud VPN tunnel

The IP address of the instance on the remote side of the VPN tunnel

質問 74
You have the following Shared VPC design VPC Flow Logs is configured for Subnet-1 In the host VPC. You also want to monitor flow logs for Subnet-2. What should you do?

Configure a firewall rule to permit Subnet-2 IP addresses outbound in the host protect VPC.

Configure Packet Mirroring in both the host and service project VPCs.

Configure a VPC Flow Logs filter for Subnet-2 in the host project VPC.

Configure VPC Flow Logs in the service project VPC for Subnet-2.

質問 75
You have ordered Dedicated Interconnect in the GCP Console and need to give the Letter of Authorization/Connecting Facility Assignment (LOA-CFA) to your cross-connect provider to complete the physical connection.
Which two actions can accomplish this? (Choose two.)

Open a Cloud Support ticket under the Cloud Interconnect category.

Download the LOA-CFA from the Hybrid Connectivity section of the GCP Console.

Run gcloud compute interconnects describe <interconnect>.

Check the email for the account of the NOC contact that you specified during the ordering process.

Contact your cross-connect provider and inform them that Google automatically sent the LOA/CFA to them via email, and to complete the connection.

質問 76
Question:
Your organization has a new security policy that requires you to monitor all egress traffic payloads from your virtual machines in the us-west2 region. You deployed an intrusion detection system (IDS) virtual appliance in the same region to meet the new policy. You now need to integrate the IDS into the environment to monitor all egress traffic payloads from us-west2. What should you do?

Enable firewall logging and forward all filtered egress firewall logs to the IDS.

Create an internal HTTP(S) load balancer for Packet Mirroring, and add a packet mirroring policy filter for egress traffic.

Create an internal TCP/UDP load balancer for Packet Mirroring, and add a packet mirroring policy filter for egress traffic.

Enable VPC Flow Logs. Create a sink in Cloud Logging to send filtered egress VPC Flow Logs to the IDS.

質問 77
You are designing a hybrid cloud environment for your organization. Your Google Cloud environment is interconnected with your on-premises network using Cloud HA VPN and Cloud Router. The Cloud Router is configured with the default settings. Your on-premises DNS server is located at 192.168.20.88 and is protected by a firewall, and your Compute Engine resources are located at 10.204.0.0/24. Your Compute Engine resources need to resolve on-premises private hostnames using the domain corp.altostrat.com while still resolving Google Cloud hostnames. You want to follow Google-recommended practices. What should you do?

Create a private forwarding zone in Cloud DNS for ‘corp.altostrat.com’ called corp-altostrat-com that points to 192.168.20.88.
Configure your on-premises firewall to accept traffic from 10.204.0.0/24.
Set a custom route advertisement on the Cloud Router for 10.204.0.0/24

Create a private forwarding zone in Cloud DNS for ‘corp.altostrat.com’ called corp-altostrat-com that points to 192.168 20.88.
Configure your on-premises firewall to accept traffic from 35.199.192.0/19 Set a custom route advertisement on the Cloud Router for 35.199.192.0/19.

Create a private forwarding zone in Cloud DNS for ‘corp .altostrat.com’ called corp-altostrat-com that points to 192.168.20.88.
Configure your on-premises firewall to accept traffic from 10.204.0.0/24.
Modify the /etc/resolv conf file on your Compute Engine instances to point to 192.168.20 88

Create a private zone in Cloud DNS for ‘corp altostrat.com’ called corp-altostrat-com.
Configure DNS Server Policies and create a policy with Alternate DNS servers to 192.168.20.88.
Configure your on-premises firewall to accept traffic from 35.199.192.0/19.
Set a custom route advertisement on the Cloud Router for 35.199.192.0/19.

質問 78
Your developer group works on a set of VM’s frequently throughout the day. To save costs, you terminate the VM when it is not in use. However, you need to preserve the contents of the disk when the VM is terminated so users can resume where they left off when a new one is created.
What is the most cost-effective way to do? (Choose two)

Set the disk to no-auto-delete to preserve contents.

Back up the disk contents to Cloud Storage before deleting.

When not in use, only stop the instance instead of deleting it.

Take a snapshot of the disk before terminating the VM.

質問 79
Question:
Your organization has approximately 100 teams that need to manage their own environments. A central team must manage the network. You need to design a landing zone that provides separate projects for each team and ensure the solution can scale. What should you do?

Configure VPC Network Peering and peer one of the VPCs to the service project.

Configure Policy-based Routing for each team.

Configure a Shared VPC and create a VPC network in the host project.

Configure a Shared VPC, and create a VPC network in the service project.

質問 80
Question:
Your organization’s security team recently discovered that there is a high risk of malicious activities originating from some of your VMs connected to the internet. These malicious activities are currently undetected when TLS communication is used. You must ensure that encrypted traffic to the internet is inspected. What should you do?

Enable Cloud Armor TLS inspection policy, and associate the policy with the backend VMs.

Use Cloud NGFW Enterprise. Create a firewall rule for egress traffic with the tls-inspect flag and associate the firewall rules with the VMs.

Configure a TLS agent on every VM to intercept TLS traffic before it reaches the internet. Configure Sensitive Data Protection to analyze and allow/deny the content.

Use Cloud NGFW Essentials. Create a firewall rule for egress traffic and enable VPC Flow Logs with the TLS inspect option. Analyze the output logs content and block the outputs that have malicious activities.

質問 81
You are migrating a three-tier application architecture from on-premises to Google Cloud. As a first step in the migration, you want to create a new Virtual Private Cloud (VPC) with an external HTTP(S) load balancer. This load balancer will forward traffic back to the on-premises compute resources that run the presentation tier. You need to stop malicious traffic from entering your VPC and consuming resources at the edge, so you must configure this policy to filter IP addresses and stop cross-site scripting (XSS) attacks. What should you do?

Create a Google Cloud Armor policy, and apply it to a backend service that uses an unmanaged instance group backend.

Create a hierarchical firewall ruleset, and apply it to the VPC’s parent organization resource node.

Create a Google Cloud Armor policy, and apply it to a backend service that uses an internet network endpoint group (NEG) backend.

Create a VPC firewall ruleset, and apply it to all instances in unmanaged instance groups.

質問 82
Your organization is deploying a single project for 3 separate departments. Two of these departments require network connectivity between each other, but the third department should remain in isolation. Your design should create separate network administrative domains between these departments. You want to minimize operational overhead.
How should you design the topology?

Create a Shared VPC Host Project and the respective Service Projects for each of the 3 separate departments.

Create 3 separate VPCs, and use Cloud VPN to establish connectivity between the two appropriate VPCs.

Create 3 separate VPCs, and use VPC peering to establish connectivity between the two appropriate VPCs.

Create a single project, and deploy specific firewall rules. Use network tags to isolate access between the departments.

質問 83
Your organization is developing a landing zone architecture with the following requirements:
No communication between production and non-production environments.
Communication between applications within an environment may be necessary.
Network administrators should centrally manage all network resources, including subnets, routes, and firewall rules.
Each application should be billed separately.
Developers of an application within a project should have the autonomy to create their compute resources.
Up to 1000 applications are expected per environment.
What should you do?

Create a design that has a Shared VPC for each project. Implement hierarchical firewall policies to apply micro-segmentation between VPCs.

Create a design where each project has its own VPC. Ensure all VPCs are connected by a Network Connectivity Center hub that is centrally managed by the network team.

Create a design that implements a single Shared VPC. Use VPC firewall rules with secure tags to enforce micro-segmentation between environments.

Create a design that has one host project with a Shared VPC for the production environment, another host project with a Shared VPC for the non-production environment, and a service project that is associated with the corresponding host project for each initiative.

質問 84
You work for a university that is migrating to Google Cloud.
These are the cloud requirements:
On-premises connectivity with 10 Gbps
Lowest latency access to the cloud
Centralized Networking Administration Team
New departments are asking for on-premises connectivity to their projects. You want to deploy the most cost-efficient interconnect solution for connecting the campus to Google Cloud.
What should you do?

Use Shared VPC, and deploy the VLAN attachments and Dedicated Interconnect in the host project.

Use Shared VPC, and deploy the VLAN attachments in the service projects. Connect the VLAN attachment to the Shared VPC’s host project.

Use standalone projects, and deploy the VLAN attachments in the individual projects. Connect the VLAN attachment to the standalone projects’ Dedicated Interconnects.

Use standalone projects and deploy the VLAN attachments and Dedicated Interconnects in each of the individual projects.

質問 85
You have the following firewall ruleset applied to all instances in your Virtual Private Cloud (VPC):

You need to update the firewall rule to add the following rule to the ruleset:

You are using a new user account. You must assign the appropriate identity and Access Management (IAM) user roles to this new user account before updating the firewall rule. The new user account must be able to apply the update and view firewall logs. What should you do?

Assign the compute.securityAdmin and logging.viewer rule to the new user account. Apply the new firewall rule with a priority of 50.

Assign the compute.securityAdmin and logging.bucketWriter role to the new user account. Apply the new firewall rule with a priority of 150.

Assign the compute.orgSecurityPolicyAdmin and logging.viewer role to the new user account. Apply the new firewall rule with a priority of 50.

Assign the compute.orgSecurityPolicyAdmin and logging.bucketWriter role to the new user account.Apply the new firewall rule with a priority of 150.

質問 86
You are troubleshooting an application in your organization’s Google Cloud network that is not functioning as expected. You suspect that packets are getting lost somewhere. The application sends packets intermittently at a low volume from a Compute Engine VM to a destination on your on-premises network through a pair of Cloud Interconnect VLAN attachments. You validated that the Cloud Next Generation Firewall (Cloud NGFW) rules do not have any deny statements blocking egress traffic, and you do not have any explicit allow rules. Following Google-recommended practices, you need to analyze the flow to see if packets are being sent correctly out of the VM to isolate the issue. What should you do?

Create a packet mirroring policy that is configured with your VM as the source and destined to a collector. Analyze the packet captures.

Enable VPC Flow Logs on the subnet that the VM is deployed in with sample_rate = 1.0, and run a query in Logs Explorer to analyze the packet flow.

Enable Firewall Rules Logging on your firewall rules and review the logs.

Verify the network/attachment/egress_dropped_packet.s_count Cloud Interconnect VLAN attachment metric.

質問 87
You need to define an address plan for a future new GKE cluster in your VPC. This will be a VPC-native cluster, and the default Pod IP range allocation will be used. You must pre-provision all the needed VPC subnets and their respective IP address ranges before cluster creation. The cluster will initially have a single node, but it will be scaled to a maximum of three nodes if necessary. You want to allocate the minimum number of Pod IP addresses.
Which subnet mask should you use for the Pod IP address range?

/21

/22

/23

/25

質問 88
Question:
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?

Enable MACsec on Partner Interconnect.

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 Cloud Router used for the Cloud Interconnect tier.

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.

Enable MACsec for Cloud Interconnect on the VLAN attachments.

質問 89
You have the following private Google Kubernetes Engine (GKE) cluster deployment:

You have a virtual machine (VM) deployed in the same VPC in the subnetwork kubernetes-management with internal IP address 192.168.40 2/24 and no external IP address assigned. You need to communicate with the cluster master using kubectl. What should you do?

Add the network 192.168.40.0/24 to the masterAuthorizedNetworksConfig. Configure kubectl to communicate with the endpoint 192.168.38.2.

Add the network 192.168.38.0/28 to the masterAuthorizedNetworksConfig. Configure kubectl to communicate with the endpoint 192.168.38.2

Add the network 192.168.36.0/24 to the masterAuthorizedNetworksConfig. Configure kubectl to communicate with the endpoint 192.168.38.2

Add an external IP address to the VM, and add this IP address in the masterAuthorizedNetworksConfig. Configure kubectl to communicate with the endpoint 35.224.37.17.

質問 90
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?

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

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

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.

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.

質問 91
You want to create a service in GCP using IPv6.
What should you do?

Create the instance with the designated IPv6 address.

Configure a TCP Proxy with the designated IPv6 address.

Configure a global load balancer with the designated IPv6 address.

Configure an internal load balancer with the designated IPv6 address.