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Google Professional-Cloud-Network-Engineer Exam Syllabus Topics:

Section	Objectives
Topic 1: Manage, monitor, and optimize network operations	- Monitor and troubleshoot network infrastructure 1. Monitor logs and metrics 2. Optimize network cost and performance 3. Analyze latency and traffic flow 4. Troubleshoot connectivity issues
Topic 2: Configure network services	- Deploy and manage Google Cloud network services 1. Configure Cloud DNS 2. Enable additional networking services 3. Configure Cloud CDN 4. Configure load balancing
Topic 3: Implement Virtual Private Cloud (VPC) instances	- Configure and manage VPC networks 1. Manage GKE networking 2. Configure subnets and routes 3. Implement Shared VPC 4. Configure firewall rules
Topic 4: Implement hybrid interconnectivity	- Implement hybrid networking solutions 1. Configure Cloud VPN 2. Configure Cloud Router and dynamic routing 3. Configure Cloud Interconnect 4. Implement site-to-site connectivity
Topic 5: Implement network security	- Secure Google Cloud network environments 1. Configure Cloud Armor policies 2. Implement secure SSH access 3. Configure Identity and Access Management 4. Configure third-party network security appliances
Topic 6: Design, plan, and prototype a Google Cloud network	- Design overall network architecture 1. Design hybrid network connectivity 2. Design Virtual Private Cloud (VPC) networks 3. Design IP addressing plans for Google Kubernetes Engine 4. Plan secure and scalable network topologies

>> Valid Professional-Cloud-Network-Engineer Exam Syllabus <<

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Google Cloud Certified - Professional Cloud Network Engineer Sample Questions (Q85-Q90):

NEW QUESTION # 85
Your organization wants to deploy an internal application named app-1 in VPC-1. The application will consume services from another internal application named app-2 in VPC-2. VPC Network Peering will connect both applications. You need to apply microsegmentation between these two applications and VPCs. What should you do?

A. Assign network tags to these applications: secure-tag-app-1 to app-1 and secure-tag-app-2 to app-2. Configure an ingress VPC firewall rule that allows traffic from secure-tag-app-1 to secure- tag-app-2. Leave the default deny ingress rule and the default allow egress rule.
B. Assign secure tags to these applications: secure-tag-app-1 to app-1 and secure-tag-app-2 to app-
2. Configure a hierarchical firewall policy with an ingress rule that allows traffic from secure-tag- app-1 to secure-tag-app-2. Leave the default deny ingress rule and the default allow egress rule.
C. Assign secure tags to these applications: secure-tag-app-1 to app-1 and secure-tag-app-2 to app-
2. Configure a network firewall policy that is attached to VPC-2 with an ingress rule that allows traffic from secure-tag-app-1 to secure-tag-app-2. Leave the default deny ingress rule and the default allow egress rule.
D. Assign network tags to these applications: secure-tag-app-1 to app-1 and secure-tag-app-2 to app-2. Configure a hierarchical firewall policy with an ingress rule that allows traffic from secure- tag-app-1 to secure-tag-app-2. Leave the default deny ingress rule and the default allow egress rule.

Answer: A

Explanation:
By assigning network tags (e.g. secure-tag-app-1 on the app-1 instances and secure-tag-app-2 on app-2) and then creating a VPC firewall ingress rule in VPC-2 that only allows traffic from tag secure-tag-app-1 to instances with tag secure-tag-app-2, you get fine-grained microsegmentation across the peered VPCs. You leave the implicit default deny ingress rule in place (so no other sources can reach app-2) and keep the default allow-all egress rule. This approach is the simplest and follows Google's best practice for tag-based segmentation in VPC Network Peering.

NEW QUESTION # 86
Your company's security team wants to limit the type of inbound traffic that can reach your web servers to protect against security threats. You need to configure the firewall rules on the web servers within your Virtual Private Cloud (VPC) to handle HTTP and HTTPS web traffic for TCP only. What should you do?

A. Create an allow on match ingress firewall rule with the target tag "web-server" to allow all IP addresses for TCP ports 80 and 443.
B. Create an allow on match egress firewall rule with the target tag "web-server" to allow all IP addresses for TCP port 80.
C. Create an allow on match ingress firewall rule with the target tag "web-server" to allow all IP addresses for TCP port 80.
D. Create an allow on match egress firewall rule with the target tag "web-server" to allow web server IP addresses for TCP ports 60 and 443.

Answer: A

Explanation:
Reference: https://cloud.google.com/load-balancing/docs/https

NEW QUESTION # 87
Your company is modernizing its infrastructure by expanding its services. You are concerned about the long-term scalability of your network due to IPv4 address exhaustion. You need to design and deploy a new Google Kubernetes Engine (GKE) cluster that allows Pods and Services to communicate over IPv6 while maintaining IPv4 connectivity for backward compatibility with existing systems. What should you do?

A. Create a new standard GKE cluster, and enable an IPv6-only address range for Pods.
B. Create a new dual-stack subnet within your VPC, and then create a new GKE cluster within that subnet and specify dual-stack networking mode.
C. Create a new GKE cluster, and enable an IPv6-only node pool.
D. Deploy a Cloud NAT gateway within your VPC to translate traffic between your existing IPv4-only GKE cluster and external IPv6 clients.

Answer: B

Explanation:
To support both IPv6 and IPv4 for Pods and Services in GKE, you need a dual-stack VPC-native cluster. Google Cloud requires the cluster to be created in a dual-stack subnet and configured for dual-stack networking so nodes, Pods, and Services can receive both IPv4 and IPv6 connectivity for backward compatibility and future scalability.
Reference:
https://docs.cloud.google.com/kubernetes-engine/docs/concepts/alias-ips
https://docs.cloud.google.com/kubernetes-engine/docs/concepts/about-ip-addressing

NEW QUESTION # 88
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.)

A. Open a Cloud Support ticket under the Cloud Interconnect category.
B. Run gcloud compute interconnects describe <interconnect>.
C. Download the LOA-CFA from the Hybrid Connectivity section of the GCP Console.
D. Check the email for the account of the NOC contact that you specified during the ordering process.
E. Contact your cross-connect provider and inform them that Google automatically sent the LOA/CFA to them via email, and to complete the connection.

Answer: C,D

Explanation:
After you order an interconnect, Google sends you and the NOC (technical contact) an email with your LOA-CFAs (one PDF file per interconnect). You must send these LOA-CFAs to your vendor so that they can install your cross connects. If you don't, your interconnects won't get connected.
https://cloud.google.com/network-connectivity/docs/interconnect/how-to/dedicated/retrieving-loas

NEW QUESTION # 89
You are configuring an Application Load Balancer. The backend resides in your on-premises data center and is connected by Dedicated Interconnect. You need to ensure the load balancer can reference these on-premises resources. You do not want the traffic to traverse the internet at all.
What should you do?

A. Configure a hybrid network endpoint group (NEG) as a backend service as part of the load balancer. Ensure firewalls are opened for the proxy-only subnet.
B. Configure a Private Service Connect network endpoint group (NEG) as a backend service as part of the load balancer. Ensure firewalls are opened for the client source IPs.
C. Configure a zonal network endpoint group (NEG) as a backend service as part of the load balancer. Ensure firewalls are opened for the client source IPs.
D. Configure an internet network endpoint group (NEG) as a backend service as part of the load balancer. Ensure firewalls are opened for the proxy-only subnet.

Answer: A

Explanation:
To ensure the Application Load Balancer can reference on-premises resources without traffic traversing the internet, you should configure a hybrid network endpoint group (NEG). Hybrid NEGs allow you to include on-premises endpoints connected through Dedicated Interconnect or VPN as part of the backend for the load balancer. Traffic from the load balancer will use the private connection (Dedicated Interconnect) to reach the on-premises resources. Opening the firewalls for the proxy-only subnet ensures that the load balancer can connect to the backend securely while keeping traffic internal and off the public internet.

NEW QUESTION # 90
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