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Google Professional-Cloud-Network-Engineer Certification Exam is an excellent opportunity for professionals who want to advance their careers in networking and cloud computing. Google Cloud Certified - Professional Cloud Network Engineer certification validates the candidate's expertise in designing, implementing, and managing a network infrastructure on the Google Cloud Platform, which is a highly sought-after skill in the industry. By passing this certification exam, candidates can demonstrate their proficiency in networking and cloud computing and open up new career opportunities.

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The Google Professional-Cloud-Network-Engineer exam consists of multiple-choice and multiple-select questions and has a duration of two hours. Professional-Cloud-Network-Engineer exam is administered through the Google Cloud Console and can be taken online from anywhere in the world. Professional-Cloud-Network-Engineer exam is designed to test the candidate's ability to configure and manage various network services such as Virtual Private Cloud (VPC), Cloud Load Balancing, Cloud CDN, Cloud DNS, and Cloud VPN. Professional-Cloud-Network-Engineer Exam also covers topics such as network security, routing, and traffic management.

Google Cloud Certified - Professional Cloud Network Engineer Sample Questions (Q304-Q309):

NEW QUESTION # 304
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?

A. Verify the network/attachment/egress_dropped_packets_count Cloud Interconnect VLAN attachment metric.
B. Enable Firewall Rules Logging on your firewall rules and review the logs.
C. Create a packet mirroring policy that is configured with your VM as the source and destined to a collector. Analyze the packet captures.
D. 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.

Answer: D

Explanation:
To troubleshoot packet loss and verify if packets are being sent correctly from the VM to the on- premises destination, enabling VPC Flow Logs is the recommended approach.
VPC Flow Logs capture metadata about the traffic flow to and from the VM, including source and destination IPs, ports, protocols, and whether traffic was allowed or denied.
By setting the SAMPLE_RATE to 1.0, you capture all traffic flows for comprehensive analysis, minimizing the chance of missing any intermittent packet flow.
Logs Explorer allows you to query and analyze these logs to identify potential issues, such as dropped packets or routing problems.
This approach aligns with Google-recommended practices for network troubleshooting, providing detailed insights without requiring additional infrastructure like packet mirroring, which may introduce complexity and resource overhead.

NEW QUESTION # 305
Question:
Your organization has distributed geographic applications with significant data volumes. You need to create a design that exposes the HTTPS workloads globally and keeps traffic costs to a minimum. What should you do?

A. Deploy a regional external Application Load Balancer with Standard Network Service Tier.
B. Deploy a global external Application Load Balancer with Premium Network Service Tier.
C. Deploy a global external proxy Network Load Balancer with Standard Network Service Tier.
D. Deploy a regional external Application Load Balancer with Premium Network Service Tier.

Answer: B

Explanation:
The global external Application Load Balancer with Premium Network Service Tier provides optimized routing and lower latency for HTTPS workloads on a global scale. Premium tier minimizes costs by avoiding multiple regional configurations while ensuring reliable performance for global users.
Reference: Google Cloud - Network Service Tiers

NEW QUESTION # 306
You need to configure the Border Gateway Protocol (BGP) session for a VPN tunnel you just created between two Google Cloud VPCs, 10.1.0.0/16 and 172.16.0.0/16. You have a Cloud Router (router-1) in the 10.1.0.0/16 network and a second Cloud Router (router-2) in the
172.16.0.0/16 network. Which configuration should you use for the BGP session?

Answer: C

Explanation:
Cloud Router BGP IP and BGP peer IP - The two BGP interface IP addresses must be link-local IP addresses belonging to a common /30 CIDR from the 169.254.0.0/16 block. Each BGP IP defines the respective link-local IP used to exchange route information. For example, 169.254.1.1 and 169.254.1.2 belong to a common /30 block.
Peer ASN - A public or private (64512 through 65534, 4200000000 through 4294967294) ASN used by your peer VPN gateway.
https://cloud.google.com/network-connectivity/docs/vpn/how-to/creating-vpn-dynamic-routes#create_a_gateway_and_tunnel

NEW QUESTION # 307
Question:
You reviewed the user behavior for your main application, which uses an external global Application Load Balancer, and found that the backend servers were overloaded due to erratic spikes in client requests. You need to limit concurrent sessions and return an HTTP 429 "Too Many Requests" response back to the client while following Google-recommended practices. What should you do?

A. Configure the load balancer to accept only the defined amount of requests per client IP address, increase the backend servers to support more traffic, and redirect traffic to a different backend to burst traffic.
B. Create a Cloud Armor security policy, and associate the policy with the load balancer. Configure the security policy's settings as follows: action: throttle, conform-action: allow, exceed-action: deny-429.
C. Configure a VM with Linux, implement the rate limit through iptables, and use a firewall rule to send an HTTP 429 response to the client application.
D. Create a Cloud Armor security policy, and apply the predefined Open Worldwide Application Security Project (OWASP) rules to automatically implement the rate limit per client IP address.

Answer: B

Explanation:
To control traffic spikes and enforce rate limits, configure Cloud Armor with throttle and deny-429 actions
. This allows you to set rate limits per client IP and ensures that excess traffic receives an HTTP 429 response, effectively controlling overload situations per Google best practices.
Reference: Google Cloud - Cloud Armor Rate Limiting

NEW QUESTION # 308
Your end users are located in close proximity to us-east1 and europe-west1. Their workloads need to communicate with each other. You want to minimize cost and increase network efficiency.
How should you design this topology?

A. Create 1 VPC with 2 regional subnets.
Deploy workloads in these subnets and have them communicate using private RFC1918 IP addresses.
B. Create 2 VPCs, each with their own regions and individual subnets.
Create 2 VPN gateways to establish connectivity between these regions.
C. Create 1 VPC with 2 regional subnets.
Create a global load balancer to establish connectivity between the regions.
D. Create 2 VPCs, each with their own region and individual subnets.
Use external IP addresses on the instances to establish connectivity between these regions.

Answer: A

Explanation:
We create one VPC network in auto mode that creates one subnet in each Google Cloud region automatically.
So, region us-east1 and europe-west1 are in the same network and they can communicate using their internal IP address even though they are in different Regions.
They take advantage of Google's global fiber network.
https://cloud.google.com/vpc/docs/using-vpc#create-auto-network

NEW QUESTION # 309
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