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To be eligible for the Google Professional-Cloud-Network-Engineer Exam, candidates should have a strong background in networking and experience working with cloud-based technologies. They should also be familiar with various network protocols, such as TCP/IP, DNS, and VPN. Professional-Cloud-Network-Engineer Exam consists of multiple-choice and scenario-based questions, and candidates have 2 hours and 30 minutes to complete it. To pass the exam, candidates must score at least 70%.

Google Cloud Certified - Professional Cloud Network Engineer Sample Questions (Q75-Q80):

NEW QUESTION # 75
You are a network administrator at your company planning a migration to Google Cloud and you need to finish the migration as quickly as possible, To ease the transition, you decided to use the same architecture as your on-premises network' a hub-and-spoke model. Your on-premises architecture consists of over 50 spokes.
Each spoke does not have connectivity to the other spokes, and all traffic IS sent through the hub for security reasons. You need to ensure that the Google Cloud architecture matches your on-premises architecture. You want to implement a solution that minimizes management overhead and cost, and uses default networking quotas and limits. What should you do?

A. Connect all the spokes to the hub with Cloud VPN.
B. Connect all the spokes to the hub with VPC Network Peering. Use a third-party network appliance as a default gateway to prevent connectivity between the spokes.
C. Connect all the spokes to the hub With Cloud VPN. Use a third-party network appliance as a default gateway to prevent connectivity between the spokes
D. Connect all the spokes to the hub with VPC Network Peering.

Answer: B

Explanation:
The correct answer is D because it meets the following requirements:
* It matches the hub-and-spoke model of the on-premises network, where each spoke is a separate VPC network that is connected to a central hub VPC network.
* It minimizes management overhead and cost, because VPC Network Peering is a simple and low-cost way to connect VPC networks without using any external IP addresses or VPN gateways1.
* It uses default networking quotas and limits, because VPC Network Peering does not consume any quota or limit for VPN tunnels, external IP addresses, or forwarding rules2.
* It prevents connectivity between the spokes, because VPC Network Peering is non-transitive by default, meaning that a spoke can only communicate with the hub, not with other spokes1. To enforce this restriction, a third-party network appliance can be used as a default gateway in each spoke VPC network, which can filter out any traffic destined for other spokes3.
Option A is incorrect because it does not minimize cost, as Cloud VPN charges for egress traffic and requires external IP addresses for the VPN gateways4. Option B is incorrect because it does not prevent connectivity between the spokes, as VPC Network Peering allows direct communication between peered VPC networks by default1. Option C is incorrect because it does not minimize cost or use default quotas and limits, for the same reasons as option A.

NEW QUESTION # 76
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 fortheir 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-westl, europe-centrall, and asia-southeastl) and minimize the IP addresses being used. What should you do?

A. O 1- Configure a Private NAT gateway instance in us-westl (172.16.1.0/24), europe-centrall (172.16.2.0
/24), and asia-southeastl (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-westl, us-centrall, and asia-southeastl to reach the on- premises location through us-east4.
B. Q 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-westl, us-centrall and asia-southeast l to reach the on-premises location through us-east 4.
C. O 1. Configure a Private NAT gateway and NAT subnet in us-westl (192.168.1.0/24), europe-centrall (192.168.2.0/24) and asia-southeastl (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-westl, us-centrall and asia-southeastl to reach the on-premises location through us-east4.
D. Q 1. Configure a Private NAT gateway instance in us-westl (192.168.1.0/24), europe-centrall (192.168.2.0/24), and asia-southeastl (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-westl, us-centrall, and asia-southeastl to reach the on-premises location through us-east4.

Answer: B

Explanation:
The key requirements are: limited IP space (192.168.0.0/20), reaching on-premises (172.16.0.0/16) from multiple Google Cloud regions (us-west1, europe-central1, asia-southeast1), and minimizing IP addresses used. The Cloud Interconnect connection to on-premises is in us-east4.
Minimize IP addresses and centralized NAT: Since all traffic to on-premises will traverse the Cloud Interconnect in us-east4, it's most efficient to configure a single Private NAT gateway instance in us-east4.
This allows resources from other regions to egress to on-premises through this single NAT gateway, using a minimal NAT subnet (192.168.1.0/24 in this case), thus conserving the limited 192.168.0.0/20 IP space.
Network Connectivity Center Spoke Export Policy: The VPC spoke needs to advertise the NAT subnet to the Network Connectivity Center hub. An export include policy is used to specify which routes (in this case, the
192.168.1.0/24 NAT subnet) should be advertised to the hub.
Global Dynamic Routing: To allow resources in us-west1, europe-central1, and asia-southeast1 to reach the on-premises location through the us-east4 Cloud Interconnect and NAT gateway, the VPC containing these resources (the spoke VPC) must have global dynamic routing enabled. This ensures that routes learned in one region (like the on-premises routes via us-east4) are available to VMs in all other regions of that VPC.
Options A and B configure Private NAT gateways in multiple regions, which consumes more IP addresses than necessary given that the Cloud Interconnect is only in us-east4. Option D uses 172.16.x.x for NAT subnets, which clashes with the on-premises IP range and the requirement to use the 192.168.0.0/20 space for cloud.
Exact Extract:
"Private NAT allows instances with private IP addresses in one VPC network to connect to on-premises or other cloud networks through a NAT IP address in a different region or network."
"To allow VMs in multiple regions to reach a central destination through a NAT gateway located in a specific region, you must configure global dynamic routing on the VPC network. This ensures that routes to the NAT gateway's subnet are propagated across all regions."
"When using Network Connectivity Center spokes, you can use export policies to control which routes are advertised from a spoke to the hub. An include policy specifies the exact prefixes to advertise."Reference:
Google Cloud Private NAT Documentation, Network Connectivity Center Documentation - Spoke policies, VPC Network Documentation - Dynamic routing mode

NEW QUESTION # 77
You create multiple Compute Engine virtual machine instances to be used at TFTP servers.
Which type of load balancer should you use?

A. Network load balancer
B. HTTP(S) load balancer
C. TCP proxy load balancer
D. SSL proxy load balancer

Answer: D

NEW QUESTION # 78
Your company's web server administrator is migrating on-premises backend servers for an application to GCP. Libraries and configurations differ significantly across these backend servers. The migration to GCP will be lift-and-shift, and all requests to the servers will be served by a single network load balancer frontend. You want to use a GCP-native solution when possible.
How should you deploy this service in GCP?

A. Create a managed instance group from one of the images of the on-premises servers, and link this instance group to a target pool behind your load balancer.
B. Use GCP's ECMP capability to load-balance traffic to the backend servers by installing multiple equal-priority static routes to the backend servers.
C. Deploy a third-party virtual appliance as frontend to these servers that will accommodate the significant differences between these backend servers.
D. Create a target pool, add all backend instances to this target pool, and deploy the target pool behind your load balancer.

Answer: D

NEW QUESTION # 79
You built a web application with several containerized microservices. You want to run those microservices on Cloud Run. You must also ensure that the services are highly available to your customers with low latency. What should you do?

A. Deploy the Cloud Run services to multiple regions. Create serverless network endpoint groups (NEGs) that point to the services. Create a global HTTPS load balancer, and attach the serverless NEGs as backend services of the load balancer.
B. Deploy the Cloud Run services to multiple availability zones. Create Cloud Endpoints that point to the services. Create a global HTTPS load balancer, and attach the Cloud Endpoints to its backend
C. Deploy the Cloud Run services to multiple availability zones. Create a global TCP load balancer. Add the Cloud Run endpoints to its backend service.
D. Deploy the Cloud Run services to multiple regions. Configure a round-robin A record in Cloud DNS.

Answer: A

NEW QUESTION # 80
......

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Samuel White Samuel White

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