PDFを無料でダウンロードにはProfessional-Cloud-Network-Engineer有効な練習テスト問題があります [Q66-Q86]

質問 66
You are disabling DNSSEC for one of your Cloud DNS-managed zones. You removed the DS records from your zone file, waited for them to expire from the cache, and disabled DNSSEC for the zone. You receive reports that DNSSEC validating resolves are unable to resolve names in your zone.
What should you do?

Update the TTL for the zone.

Set the zone to the TRANSFER state.

Disable DNSSEC at your domain registrar.

Transfer ownership of the domain to a new registrar.

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
You recently noticed a recurring daily spike in network usage in your Google Cloud project. You need to identify the virtual machine (VM) instances and type of traffic causing the spike in traffic utilization while minimizing the cost and management overhead required. What should you do?

Enable VPC Flow Logs and send the output to BigQuery for analysis.

Enable Firewall Rules Logging for all allowed traffic and send the output to BigQuery for analysis.

Configure Packet Mirroring to send all traffic to a VM. Use Wireshark on the VM to identity traffic utilization for each VM in the VPC.

Deploy a third-party network appliance and configure it as the default gateway. Use the third-party network appliance to identify users with high network traffic.

質問 69
You are increasing your usage of Cloud VPN between on-premises and GCP, and you want to support more traffic than a single tunnel can handle. You want to increase the available bandwidth using Cloud VPN.
What should you do?

Double the MTU on your on-premises VPN gateway from 1460 bytes to 2920 bytes.

Create two VPN tunnels on the same Cloud VPN gateway that point to the same destination VPN gateway IP address.

Add a second on-premises VPN gateway with a different public IP address. Create a second tunnel on the existing Cloud VPN gateway that forwards the same IP range, but points at the new on-premises gateway IP.

Add a second Cloud VPN gateway in a different region than the existing VPN gateway. Create a new tunnel on the second Cloud VPN gateway that forwards the same IP range, but points to the existing on-premises VPN gateway IP address.

質問 70
You are using a third-party next-generation firewall to inspect traffic. You created a custom route of 0.0.0.0/0 to route egress traffic to the firewall. You want to allow your VPC instances without public IP addresses to access the BigQuery and Cloud Pub/Sub APIs, without sending the traffic through the firewall.
Which two actions should you take? (Choose two.)

Create a set of custom static routes to send traffic to the external IP addresses of Google APIs and services via the default internet gateway.

Turn on Private Services Access at the VPC level.

Turn on Private Google Access at the subnet level.

Turn on Private Google Access at the VPC level.

Create a set of custom static routes to send traffic to the internal IP addresses of Google APIs and services via the default internet gateway.

質問 71
Your multi-region VPC has had a long-standing HA VPN configured in “region 1” connected to your corporate network. You are planning to add two 10 Gbps Dedicated Interconnect connections and VLAN attachments in “region 2” to connect to the same corporate network. You need to plan for connectivity between your VPC and corporate network to ensure that traffic uses the Dedicated Interconnect connections as the primary path and the HA VPN as the secondary path. What should you do?

Enable regional dynamic routing mode on the VPC. Configure BGP associated with the HA VPN in “region 1” to use a base priority value of 100. Configure BGP associated with the VLAN attachments to use a base priority of 20000. Configure your on-premises routers to use similar multi-exit discriminator (MED) values.

Enable global dynamic routing mode on the VPC. Configure BGP associated with the HA VPN in “region 1” to use a base priority value of 100. Configure BGP associated with the VLAN attachments to use a base priority of 20000. Configure your on-premises routers to use similar multi-exit discriminator (MED) values.

Enable regional dynamic routing mode on the VPC. Configure BGP associated with the HA VPN in “region 1” to use a base priority value of 20000. Configure BGP associated with the VLAN attachments to use a base priority of 100. Configure your on-premises routers to use similar multi-exit discriminator (MED) values.

Enable global dynamic routing mode on the VPC. Configure BGP associated with the HA VPN in “region 1” to use a base priority value of 20000. Configure BGP associated with the VLAN attachments to use a base priority of 100. Configure your on-premises routers to use similar multi-exit discriminator (MED) values.

質問 72
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.
You must also make sure the solution can scale. What should you do?

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

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

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

Configure Policy-based Routing for each team.

質問 73
You created a VPC network named Retail in auto mode. You want to create a VPC network named Distribution and peer it with the Retail VPC.
How should you configure the Distribution VPC?

Create the Distribution VPC in auto mode. Peer both the VPCs via network peering.

Create the Distribution VPC in custom mode. Use the CIDR range 10.0.0.0/9. Create the necessary subnets, and then peer them via network peering.

Create the Distribution VPC in custom mode. Use the CIDR range 10.128.0.0/9. Create the necessary subnets, and then peer them via network peering.

Rename the default VPC as “Distribution” and peer it via network peering.

質問 74
Your company has a security team that manages firewalls and SSL certificates. It also has a networking team that manages the networking resources. The networking team needs to be able to read firewall rules, but should not be able to create, modify, or delete them.
How should you set up permissions for the networking team?

Assign members of the networking team the compute.networkUser role.

Assign members of the networking team the compute.networkAdmin role.

Assign members of the networking team a custom role with only the compute.networks.* and the compute.firewalls.list permissions.

Assign members of the networking team the compute.networkViewer role, and add the compute.networks.use permission.

質問 75
(You are managing the security configuration of your company’s Google Cloud organization. The Operations team needs specific permissions on both a Google Kubernetes Engine (GKE) cluster and a Cloud SQL instance. Two predefined Identity and Access Management (IAM) roles exist that contain a subset of the permissions needed by the team. You need to configure the necessary IAM permissions for this team while following Google-recommended practices. What should you do?)

Grant the team the two predefined IAM roles.

Create a custom IAM role that combines the permissions from the two relevant predefined roles.

Create a custom IAM role that includes only the required permissions from the predefined roles.

Grant the team the IAM roles of Kubernetes Engine Admin and Cloud SQL Admin.

質問 76
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?

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

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

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

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.

質問 77
There are two established Partner Interconnect connections between your on-premises network and Google Cloud. The VPC that hosts the Partner Interconnect connections is named “vpc-a” and contains three VPC subnets across three regions, Compute Engine instances, and a GKE cluster. Your on-premises users would like to resolve records hosted in a Cloud DNS private zone following Google-recommended practices. You need to implement a solution that allows your on-premises users to resolve records that are hosted in Google Cloud. What should you do?

Associate the private zone to “vpc-a.” Create an outbound forwarding policy and associate the policy to “vpc-a.” Configure the on-premises DNS servers to forward queries for the private zone to the entry point addresses created when the policy was attached to “vpc-a.”

Configure a DNS proxy service inside one of the GKE clusters. Expose the DNS proxy service in GKE as an internal load balancer. Configure the on-premises DNS servers to forward queries for the private zone to the IP address of the internal load balancer.

Use custom route advertisements to announce 169.254.169.254 via BGP to the on-premises environment. Configure the on-premises DNS servers to forward DNS requests to 169.254.169.254.

Associate the private zone to “vpc-a.” Create an inbound forwarding policy and associate the policy to “vpc-a.” Configure the on-premises DNS servers to forward queries for the private zone to the entry point addresses created when the policy was attached to “vpc-a.”

質問 78
You have the networking configuration shown in the diagram. A pair of redundant Dedicated Interconnect connections (int-Igal and int-Iga2) terminate on the same Cloud Router The Interconnect connections terminate on two separate on-premises routers. You are advertising the same prefixes from the Border Gateway Protocol (BGP) sessions associated with the Dedicated Interconnect connections. You need to configure one connection as Active for both ingress and egress traffic. If the active Interconnect connection fails, you want the passive Interconnect connection to automatically begin routing all traffic Which two actions should you take to meet this requirement? (Choose Two)

Configure the advertised route priority > 10,200 on the active Interconnect connection.

Advertise a lower MED on the passive Interconnect connection from the on-premises router

Configure the advertised route priority as 200 for the BGP session associated Wlth the active Interconnect connection.

Configure the advertised route priority as 200 for the BGP session associated With the passive Interconnect connection.

Advertise a lower MED on the active Interconnect connection from the on-premises router

This answer meets the requirement of configuring one connection as Active for both ingress and egress traffic, and enabling automatic failover to the passive connection in case of failure. The reason is:
The advertised route priority is a value that Cloud Router uses to set the route priority when advertising routes to your on-premises router. The lower the value, the higher the priority1. By setting the advertised route priority as 200 for the active connection, you ensure that it has a higher priority than the passive connection, which has the default value of 1001. This way, your on-premises router will prefer the routes from the active connection over the passive one for ingress traffic.
The MED (Multi-Exit Discriminator) is a value that your on-premises router uses to indicate its preference for receiving traffic from Cloud Router. The lower the value, the higher the preference2. By advertising a lower MED on the active connection from your on-premises router, you ensure that Cloud Router will prefer sending traffic to the active connection over the passive one for egress traffic.
If the active connection fails, Cloud Router will stop receiving routes from it and will start using the routes from the passive connection for egress traffic. Similarly, your on-premises router will stop receiving routes with priority 200 from the active connection and will start using the routes with priority 100 from the passive connection for ingress traffic. This achieves automatic failover without any manual intervention.
Option A is incorrect because setting the advertised route priority > 10,200 on the active connection would deprioritize it globally in your VPC network, which is not what you want1. Option B is incorrect because advertising a lower MED on the passive connection would make Cloud Router prefer sending traffic to it over the active one, which is not what you want2. Option D is incorrect because setting the advertised route priority as 200 for both connections would make them equally preferred by your on-premises router, which is not what you want1.
Reference:
Update the base route priority | Cloud Router | Google Cloud
Configuring BGP sessions | Cloud Router | Google Cloud

質問 79
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 80
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 81
You have provisioned a Dedicated Interconnect connection of 20 Gbps with a VLAN attachment of 10 Gbps.
You recently noticed a steady increase in ingress traffic on the Interconnect connection from the on-premises data center. You need to ensure that your end users can achieve the full 20 Gbps throughput as quickly as possible. Which two methods can you use to accomplish this? (Choose two.)

Configure an additional VLAN attachment of 10 Gbps in another region. Configure the on-premises router to advertise routes with the same multi-exit discriminator (MED).

Configure an additional VLAN attachment of 10 Gbps in the same region. Configure the on-premises router to advertise routes with the same multi-exit discriminator (MED).

From the Google Cloud Console, modify the bandwidth of the VLAN attachment to 20 Gbps.

From the Google Cloud Console, request a new Dedicated Interconnect connection of 20 Gbps, and configure a VLAN attachment of 10 Gbps.

Configure Link Aggregation Control Protocol (LACP) on the on-premises router to use the 20-Gbps Dedicated Interconnect connection.

質問 82
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 83
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 84
You recently deployed Cloud VPN to connect your on-premises data canter to Google Cloud. You need to monitor the usage of this VPN and set up alerts in case traffic exceeds the maximum allowed. You need to be able to quickly decide whether to add extra links or move to a Dedicated Interconnect. What should you do?

In the Network Intelligence Canter, check for the number of packet drops on the VPN.

In the Google Cloud Console, use Monitoring Query Language to create a custom alert for bandwidth utilization.

In the Monitoring section of the Google Cloud Console, use the Dashboard section to select a default dashboard for VPN usage.

In the VPN section of the Google Cloud Console, select the VPN under hybrid connectivity, and then select monitoring to display utilization on the dashboard.

質問 85
You are designing a hub-and-spoke network architecture for your company’s cloud-based environment. You need to make sure that all spokes are peered with the hub. The spokes must use the hub’s virtual appliance for internet access.
The virtual appliance is configured in high-availability mode with two instances using an internal load balancer with IP address 10.0.0.5. What should you do?

Create a default route in the hub VPC that points to IP address 10.0.0.5.
Delete the default internet gateway route in the hub VPC, and create a new higher-priority route that is tagged only to the appliances with a next hop of the default internet gateway.
Export the custom routes in the hub.
Import the custom routes in the spokes.

Create a default route in the hub VPC that points to IP address 10.0.0.5.
Delete the default internet gateway route in the hub VPC, and create a new higher-priority route that is tagged only to the appliances with a next hop of the default internet gateway.
Export the custom routes in the hub. Import the custom routes in the spokes.
Delete the default internet gateway route of the spokes.

Create two default routes in the hub VPC that point to the next hop instances of the virtual appliances.
Delete the default internet gateway route in the hub VPC, and create a new higher-priority route that is tagged only to the appliances with a next hop of the default internet gateway.
Export the custom routes in the hub. Import the custom routes in the spokes.

Create a default route in the hub VPC that points to IP address 10.0.0.5.
Delete the default internet gateway route in the hub VPC, and create a new higher-priority route that is tagged only to the appliances with a next hop of the default internet gateway.
Create a new route in the spoke VPC that points to IP address 10.0.0.5.

質問 86
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 caused autoscaling to reach the maximum number of instances, and users of your application cannot complete transactions. After an investigation, you think it is 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.)

Use Cloud Armor to blacklist the attacker’s IP addresses.

Increase the maximum autoscaling backend to accommodate the severe bursty traffic.

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

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

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