お手軽にダウンロードできるProfessional-Cloud-Network-Engineer試験問題集が更新されたのは80問があります
最新更新されたのはProfessional-Cloud-Network-Engineer試験問題2022年更新
Google Professional-Cloud-Network-Engineer 認定試験の出題範囲：
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質問 28
You are creating a new application and require access to Cloud SQL from VPC instances without public IP addresses.
Which two actions should you take? (Choose two.)
- A. Create a custom static route to allow the traffic to reach the Cloud SQL API.
- B. Activate the Cloud Datastore API in your project.
- C. Activate the Service Networking API in your project.
- D. Enable Private Google Access.
- E. Create a private connection to a service producer.
正解: C,E
解説:
Explanation/Reference: https://cloud.google.com/sql/docs/mysql/private-ip
質問 29
You need to restrict access to your Google Cloud load-balanced application so that only specific IP addresses can connect.
What should you do?
- A. Create a secure perimeter using the Access Context Manager feature of VPC Service Controls and restrict access to the source IP range of the allowed clients and Google health check IP ranges.
- B. Label the backend instances "application," and create a firewall rule with the target label "application" and the source IP range of the allowed clients and Google health check IP ranges.
- C. Create a secure perimeter using VPC Service Controls, and mark the load balancer as a service restricted to the source IP range of the allowed clients and Google health check IP ranges.
- D. Tag the backend instances "application," and create a firewall rule with target tag "application" and the source IP range of the allowed clients and Google health check IP ranges.
正解: D
解説:
Explanation/Reference: https://link.springer.com/chapter/10.1007/978-1-4842-1004-8_4
質問 30
After a network change window one of your company's applications stops working. The application uses an on-premises database server that no longer receives any traffic from the application. The database server IP address is 10.2.1.25. You examine the change request, and the only change is that 3 additional VPC subnets were created. The new VPC subnets created are 10.1.0.0/16, 10.2.0.0/16, and 10.3.1.0/24/ The on-premises router is advertising 10.0.0.0/8.
What is the most likely cause of this problem?
- A. The more specific VPC subnet route is taking priority.
- B. A cloud firewall rule that blocks traffic to the on-premises database server was created during the change.
- C. The less specific VPC subnet route is taking priority.
- D. The on-premises router is not advertising a route for the database server.
正解: B
質問 31
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)
- A. Set the disk to no-auto-delete to preserve contents.
- B. Take a snapshot of the disk before terminating the VM.
- C. Back up the disk contents to Cloud Storage before deleting.
- D. When not in use, only stop the instance instead of deleting it.
正解: A,D
解説:
A (Correct Answer) - Set the disk to no-auto-delete to preserve contents. Setting your instance to not delete the root disk when deleting the instance will preserve the disk contents to attach to a new instance.
C (Correct Answer) - When not in use, only stop the instance instead of deleting it. Alternatively, you can merely stop the instance instead of deleting it, during which time you will not be billed for Machine Type usage (just disk storage).
B and D may work but are not suitable solutions since the VMs may need frequently stop and resume throughout the day.
More Information:
https://cloud.google.com/sdk/gcloud/reference/compute/instances/set-disk-auto-delete
質問 32
After a network change window one of your company's applications stops working. The application uses an on-premises database server that no longer receives any traffic from the application. The database server IP address is 10.2.1.25. You examine the change request, and the only change is that 3 additional VPC subnets were created. The new VPC subnets created are 10.1.0.0/16, 10.2.0.0/16, and 10.3.1.0/24/ The on-premises router is advertising 10.0.0.0/8.
What is the most likely cause of this problem?
- A. A cloud firewall rule that blocks traffic to the on-premises database server was created during the change.
- B. The less specific VPC subnet route is taking priority.
- C. The more specific VPC subnet route is taking priority.
- D. The on-premises router is not advertising a route for the database server.
正解: C
質問 33
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?
- A. A firewall is blocking the traffic across the second VPN connection.
- B. You do not have a load balancer to load-balance the network traffic.
- C. BGP sessions are not established between both on-premises routers and the Cloud Router.
- D. One of the VPN sessions is configured incorrectly.
正解: D
解説:
If the VPN logs show a no-proposal-chosen error, this error indicates that Cloud VPN and your peer VPN gateway were unable to agree on a set of ciphers. For IKEv1, the set of ciphers must match exactly. For IKEv2, there must be at least one common cipher proposed by each gateway. Make sure that you use supported ciphers to configure your peer VPN gateway. https://cloud.google.com/network-connectivity/docs/vpn/support/troubleshooting#:~:text=If%20the%20VPN%20logs%20show,of%20ciphers%20must%20match%20exactly.&text=Make%20sure%20that%20you%20use,configure%20your%20peer%20VPN%20gateway.
質問 34
You want to set up two Cloud Routers so that one has an active Border Gateway Protocol (BGP) session, and the other one acts as a standby.
Which BGP attribute should you use on your on-premises router?
- A. Multi-exit Discriminator
- B. Community
- C. AS-Path
- D. Local Preference
正解: A
質問 35
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?
- A. Client IP, port and protocol
- B. Client IP and protocol
- C. Client IP
- D. None
正解: C
質問 36
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?
- A. Try connecting to the instance via SSH, and check the logs.
- B. Create a new firewall rule to allow traffic from port 22, and enable logs.
- C. Create a new firewall rule with priority 65500 to deny all traffic, and enable logs.
- D. Check the VPC flow logs for the instance.
正解: D
質問 37
You have a storage bucket that contains the following objects:
- folder-a/image-a-1.jpg
- folder-a/image-a-2.jpg
- folder-b/image-b-1.jpg
- folder-b/image-b-2.jpg
Cloud CDN is enabled on the storage bucket, and all four objects have been successfully cached. You want to remove the cached copies of all the objects with the prefix folder-a, using the minimum number of commands.
What should you do?
- A. Issue a cache invalidation command with pattern /folder-a/*.
- B. Disable Cloud CDN on the storage bucket. Wait 90 seconds. Re-enable Cloud CDN on the storage bucket.
- C. Add an appropriate lifecycle rule on the storage bucket.
- D. Make sure that all the objects with prefix folder-a are not shared publicly.
正解: D
質問 38
You are designing a Google Kubernetes Engine (GKE) cluster for your organization. The current cluster size is expected to host 10 nodes, with 20 Pods per node and 150 services. Because of the migration of new services over the next 2 years, there is a planned growth for 100 nodes, 200 Pods per node, and 1500 services. You want to use VPC-native clusters with alias IP ranges, while minimizing address consumption.
How should you design this topology?
- A. Create a subnet of size/25 with 2 secondary ranges of: /17 for Pods and /21 for Services. Create a VPC-native cluster and specify those ranges.
- B. Use gcloud container clusters create [CLUSTER NAME] to create a VPC-native cluster.
- C. Create a subnet of size/28 with 2 secondary ranges of: /24 for Pods and /24 for Services. Create a VPC-native cluster and specify those ranges. When the services are ready to be deployed, resize the subnets.
- D. Use gcloud container clusters create [CLUSTER NAME]--enable-ip-alias to create a VPC-native cluster.
正解: C
質問 39
You have a web application that is currently hosted in the us-central1 region. Users experience high latency when traveling in Asia. You've configured a network load balancer, but users have not experienced a performance improvement. You want to decrease the latency.
What should you do?
- A. Configure an HTTP load balancer, and direct the traffic to it.
- B. Configure a policy-based route rule to prioritize the traffic.
- C. Configure the TTL for the DNS zone to decrease the time between updates.
- D. Configure Dynamic Routing for the subnet hosting the application.
正解: A
解説:
https://cloud.google.com/load-balancing/docs/tutorials/optimize-app-latency
質問 40
You decide to set up Cloud NAT. After completing the configuration, you find that one of your instances is not using the Cloud NAT for outbound NAT.
What is the most likely cause of this problem?
- A. The instance has been configured with multiple interfaces.
- B. An external IP address has been configured on the instance.
- C. The instance is accessible by a load balancer external IP address.
- D. You have created static routes that use RFC1918 ranges.
正解: B
解説:
Explanation/Reference: https://www.sovereignsolutionscorp.com/google-cloud-nat/
質問 41
You have an application hosted on a Compute Engine virtual machine instance that cannot communicate with a resource outside of its subnet. When you review the flow and firewall logs, you do not see any denied traffic listed.
During troubleshooting you find:
* Flow logs are enabled for the VPC subnet, and all firewall rules are set to log.
* The subnetwork logs are not excluded from Stackdriver.
* The instance that is hosting the application can communicate outside the subnet.
* Other instances within the subnet can communicate outside the subnet.
* The external resource initiates communication.
What is the most likely cause of the missing log lines?
- A. The traffic is not matching the expected ingress rule.
- B. The traffic is matching the expected egress rule.
- C. The traffic is matching the expected ingress rule.
- D. The traffic is not matching the expected egress rule.
正解: A
質問 42
All the instances in your project are configured with the custom metadata enable-oslogin value set to FALSE and to block project-wide SSH keys. None of the instances are set with any SSH key, and no project-wide SSH keys have been configured. Firewall rules are set up to allow SSH sessions from any IP address range. You want to SSH into one instance.
What should you do?
- A. Generate a new SSH key pair. Verify the format of the public key and add it to the project. SSH into the instance using a third-party tool like putty or ssh.
- B. Open the Cloud Shell SSH into the instance using gcloud compute ssh.
- C. Generate a new SSH key pair. Verify the format of the private key and add it to the instance. SSH into the instance using a third-party tool like putty or ssh.
- D. Set the custom metadata enable-oslogin to TRUE, and SSH into the instance using a third-party tool like putty or ssh.
正解: D
質問 43
You want to deploy a VPN Gateway to connect your on-premises network to GCP. You are using a non BGP-capable on-premises VPN device. You want to minimize downtime and operational overhead when your network grows. The device supports only IKEv2, and you want to follow Google-recommended practices.
What should you do?
- A. Create a Cloud VPN instance.
Create a policy-based VPN tunnel per subnet.
Configure the appropriate local and remote traffic selectors to match your local and remote networks.
Create the appropriate static routes. - B. Create a Cloud VPN instance.
Create a policy-based VPN tunnel.
Configure the appropriate local and remote traffic selectors to match your local and remote networks.
Configure the appropriate static routes. - C. Create a Cloud VPN instance.
Create a route-based VPN tunnel.
Configure the appropriate local and remote traffic selectors to match your local and remote networks.
Configure the appropriate static routes. - D. Create a Cloud VPN instance.
Create a route-based VPN tunnel.
Configure the appropriate local and remote traffic selectors to 0.0.0.0/0.
Configure the appropriate static routes.
正解: D
解説:
https://cloud.google.com/vpn/docs/concepts/choosing-networks-routing
質問 44
You work for a organization called cloudtech5 . Your organization has decided to implement continuous integration and delivery (CI/CD) pipeline on Google Cloud Platform using only hosted products and the popular GitOps methodology . The architecture includes many microservices that are updated frequently and rolled back . Please select the products that should be used.
- A. Cloud Source repositories, Jenkins on Compute Engine , Container Registry , Google Kubernetes Engine.
- B. Cloud Storage , Cloud Dataflow,Compute Engine.
- C. Cloud Source repositories, Cloud Build ,Container Registry,Google Kubernetes Engine
- D. BitBucket , Cloud Build , Container Registry , Google Kubernetes Engine.
正解: C
解説:
Option A is the Correct choice because , Cloud Source repositories is a a fully featured, scalable, private Git repository hosted on Google Cloud . Cloud Build is a service that executes your builds on Google Cloud Platform infrastructure. Cloud Build can import source code from Google Cloud Storage, Cloud Source Repositories, GitHub, or Bitbucket, execute a build to your specifications, and produce artifacts such as Docker containers or Java archives. Container Registry is a private container image registry that runs on Google Cloud Platform. Google Kuberenetes Engine is ideal for deploying small services that can be updated and rolled back quickly.
Option B is Incorrect because , BitBucket isn't Google Cloud hosted service but it can be used to achieve the same results .
Option C is Incorrect because Jenkins on Compute Engine isn't Google hosted product , Cloud build is the right choice because it is a service managed by Google Cloud .
Option D is Incorrect because , the objective is to implement CI/CD pipeline not data processing pipeline .
質問 45
You need to create a GKE cluster in an existing VPC that is accessible from on-premises. You must meet the following requirements:
* IP ranges for pods and services must be as small as possible.
* The nodes and the master must not be reachable from the internet.
* You must be able to use kubectl commands from on-premises subnets to manage the cluster.
How should you create the GKE cluster?
- A. * Create a private cluster that uses VPC advanced routes.
* Set the pod and service ranges as /24.
* Set up a network proxy to access the master. - B. * Create a VPC-native GKE cluster using GKE-managed IP ranges.
* Set the pod IP range as /21 and service IP range as /24.
* Set up a network proxy to access the master. - C. * Create a VPC-native GKE cluster using user-managed IP ranges.
* Enable privateEndpoint on the cluster master.
* Set the pod and service ranges as /24.
* Set up a network proxy to access the master.
* Enable master authorized networks. - D. * Create a VPC-native GKE cluster using user-managed IP ranges.
* Enable a GKE cluster network policy, set the pod and service ranges as /24.
* Set up a network proxy to access the master.
* Enable master authorized networks.
正解: D
解説:
Reference:
https://cloud.google.com/kubernetes-engine/docs/how-to/alias-ips
質問 46
You have an application that is running in a managed instance group. Your development team has released an updated instance template which contains a new feature which was not heavily tested. You want to minimize impact to users if there is a bug in the new template.
How should you update your instances?
- A. Using the new instance template, perform a rolling update across all instances in the instance group. Verify the new feature once the rollout completes.
- B. Manually patch some of the instances, and then perform a rolling restart on the instance group.
- C. Perform a canary update by starting a rolling update and specifying a target size for your instances to receive the new template. Verify the new feature on the canary instances, and then roll forward to the rest of the instances.
- D. Deploy a new instance group and canary the updated template in that group. Verify the new feature in the new canary instance group, and then update the original instance group.
正解: D
質問 47
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?
- A. The IP address of the instance on the remote side of the VPN tunnel
- B. The default internet gateway
- C. The name and region of the Cloud VPN tunnel
- D. The IP address of the Cloud VPN gateway
正解: C
解説:
Reference:
https://cloud.google.com/vpn/docs/how-to/creating-static-vpns
質問 48
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. Network load balancer
- B. HTTP(S) load balancer
- C. TCP/SSL proxy load balancer
- D. Internal load balancer
正解: A
解説:
Reference:
https://cloud.google.com/load-balancing/docs/network
質問 49
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.)
- A. Use Cloud Armor to blacklist the attacker's IP addresses.
- B. SSH into the backend compute engine instances, and view the auth logs and syslogs to further understand the nature of the attack.
- 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. Increase the maximum autoscaling backend to accommodate the severe bursty traffic.
正解: B,E
質問 50
You need to ensure your personal SSH key works on every instance in your project. You want to accomplish this as efficiently as possible.
What should you do?
- A. Upload your public ssh key to each instance Metadata.
- B. Upload your public ssh key to the project Metadata.
- C. Use gcloud compute ssh to automatically copy your public ssh key to the instance.
- D. Create a custom Google Compute Engine image with your public ssh key embedded.
正解: B
解説:
https://cloud.google.com/compute/docs/instances/adding-removing-ssh-keys
質問 51
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ベストな問題集を使おうGoogle Cloud Platform Professional-Cloud-Network-Engineer専門試験問題：https://drive.google.com/open?id=12poOAN9VW22yALF9-M5OlZvu1fL9s5hE