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

Section	Objectives
Topic 1: 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 2: Design, plan, and prototype a Google Cloud network	- Design overall network architecture 1. Plan secure and scalable network topologies 2. Design hybrid network connectivity 3. Design Virtual Private Cloud (VPC) networks 4. Design IP addressing plans for Google Kubernetes Engine
Topic 3: Implement network security	- Secure Google Cloud network environments 1. Configure Cloud Armor policies 2. Configure Identity and Access Management 3. Implement secure SSH access 4. Configure third-party network security appliances
Topic 4: Implement Virtual Private Cloud (VPC) instances	- Configure and manage VPC networks 1. Configure subnets and routes 2. Implement Shared VPC 3. Configure firewall rules 4. Manage GKE networking
Topic 5: Implement hybrid interconnectivity	- Implement hybrid networking solutions 1. Configure Cloud Router and dynamic routing 2. Configure Cloud Interconnect 3. Implement site-to-site connectivity 4. Configure Cloud VPN
Topic 6: 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

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Google Cloud Certified - Professional Cloud Network Engineer Sample Questions (Q274-Q279):

NEW QUESTION # 274
Your organization has deployed Google Kubernetes Engine (GKE) clusters in several different Virtual Private Clouds (VPCs) for the past year, one GKE cluster per VPC. While the GKE nodes leverage unique IP space between each cluster, the Pod IP ranges have been reused across VPCs. The VPCs are spokes of a Network Connectivity Center hub configured in mesh topology.
The Pod IP ranges have been excluded from the Network Connectivity Center VPC spokes.
While this process seems to work and Compute Engine instances in the VPCs can reach services, you notice that the Pods are unable to access services in other VPCs. You need to enable communication between Pods in different VPCs. What should you do?

A. Delete the Network Connectivity Center hub and VPC spokes. Connect all VPCs by using Cloud VPNs.
B. Delete the Network Connectivity Center hub and VPC spokes. Peer all VPCs by using VPC Network Peering.
C. Ensure that the IP masquerade agent is installed correctly and performing source NAT for Pod traffic destined to services outside of the cluster.
D. Delete the GKE clusters, create a new pair of VMs in the subnets used by the GKE clusters, and test the connectivity. Recreate the GKE clusters.

Answer: C

Explanation:
Because Pod IP ranges are reused across VPCs and excluded from export, remote VPCs cannot route back to the originating Pod CIDRs. Enabling source NAT for Pod egress to destinations outside the cluster makes Pod-to-service traffic use node IPs (which are unique and routable across the NCC mesh), allowing return traffic to follow valid routes and restoring cross-VPC connectivity for Pods.

NEW QUESTION # 275
You recently deployed two network virtual appliances in us-central1. Your network appliances provide connectivity to your on-premises network, 10.0.0.0/8. You need to configure the routing for your Virtual Private Cloud (VPC). Your design must meet the following requirements:
All access to your on-premises network must go through the network virtual appliances.
Allow on-premises access in the event of a single network virtual appliance failure.
Both network virtual appliances must be used simultaneously.
Which method should you use to accomplish this?

A. Configure an internal TCP/UDP load balancer with the two network virtual appliances as backends. Configure a route for 10.0.0.0/8 with the internal load balancer as the next hop.
B. Configure an internal HTTP(S) load balancer with the two network virtual appliances as backends. Configure a route for 10.0.0.0/8 with the internal HTTP(S) load balancer as the next hop.
C. Configure two routes for 10.0.0.0/8 with different priorities, each pointing to separate network virtual appliances.
D. Configure a network load balancer for the two network virtual appliances. Configure a route for 10.0.0.0/8 with the network load balancer as the next hop.

Answer: B

NEW QUESTION # 276
Your organization has five different VPCs across different projects in y our Google Cloud organization that need high-throughput connectivity. You have performed an audit of the IP address utilization in each VPC, and there are two overlapping subnets that are used by two of the VPCs: 240.0.0.0/16 and 240.128.0.0/24. You have confirmed that no Class E subnets (240.0.0.0/4) will require inter-VPC connectivity, but all other subnets in the VPCs will need connectivity. You need to deploy a Google Cloud routing solution to meet the connectivity requirements. What should you do?

A. Create a full mesh of VPC Network Peering connections between all five VPCs. Make sure not to import or export subnet routes with public IP addresses. Add Cloud network firewall policy rules to allow traffic.
B. Create a full mesh of VPC Network Peering connections between all five VPCs with an export exclude filter for 240.0.0.0/4 on every side. Add Cloud network firewall policy rules to allow traffic.
C. Create a series of multiple network interface VMs with an interface in each VPC. Place the VMs in an instance group. Create an internal passthrough Network Load Balancer in each VPC with the backend of the instance group. Configure custom static routes in each VPC with the next hop of the respective load balancer. Add Cloud network firewall policy rules to allow traffic.
D. Create a Network Connectivity Center hub with a mesh topology. Add a VPC spoke for each of the five VPCs and configure an export exclude filter for 240.0.0.0/4. Add Cloud network firewall policy rules to allow traffic.

Answer: D

Explanation:
Network Connectivity Center with a Mesh Topology: Network Connectivity Center (NCC) provides a scalable and managed solution for interconnecting multiple VPCs. A mesh topology allows all VPCs to communicate with each other without requiring direct peering connections between every pair of VPCs, simplifying the configuration and management for a high-throughput environment.
Exclusion of Overlapping Subnets: Using an export exclude filter for 240.0.0.0/4, you ensure that overlapping subnets within the Class E address range (240.0.0.0/4) are not included in the routing table, which avoids routing conflicts between the two overlapping subnets.
Firewall Policy Rules: Adding appropriate Cloud network firewall rules ensures that only authorized traffic is allowed between the VPCs, enhancing security and maintaining compliance with organizational policies.

NEW QUESTION # 277
A database virtual machine on Google Compute Engine has an ext4-formatted persistent disk for data files. The database is about to run out of storage space How can you remediate the problem with the least amount of downtime?

A. In the Cloud Platform Console, increase the size of the persistent disk and use the resize2fs command in Linux.
B. In the Cloud Platform Console, create a snapshot of the persistent disk, restore the snapshot to a new larger disk, unmount the old disk, mount the new disk, and restart the database service.
C. Shut down the virtual machine, use the Cloud Platform Console to increase the persistent disk size, then restart the virtual machine.
D. In the Cloud Platform Console, create a new persistent disk attached to the virtual machine, format and mount it, and configure the database service to move the files to the new disk.
E. In the Cloud Platform Console, increase the size of the persistent disk and verify the new space is ready to use with the fdisk command in Linux.

Answer: A

Explanation:
A (Correct answer) - In the Cloud Platform Console, increase the size of the persistent disk and use the resize2fs command in Linux.
Here are the steps: In the Cloud Platform Console, increase the size of the persistent disk; after indicating size increase in console, to make the new size effective, you have two options: restart the VM or configure in the VM's operating systems, Windows or Linux.

NEW QUESTION # 278
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?

A. 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.
B. Add the network 192.168.38.0/28 to the masterAuthorizedNetworksConfig. Configure kubectl to communicate with the endpoint 192.168.38.2
C. Add the network 192.168.36.0/24 to the masterAuthorizedNetworksConfig. Configure kubectl to communicate with the endpoint 192.168.38.2
D. Add the network 192.168.40.0/24 to the masterAuthorizedNetworksConfig. Configure kubectl to communicate with the endpoint 192.168.38.2.

Answer: D

NEW QUESTION # 279
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