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

Section	Weight	Objectives
Topic 1: Configuring hybrid and multi-cloud connectivity	14%	- Cloud Router 1. BGP configuration, route advertisement - Cloud Interconnect 1. Dedicated, Partner Interconnect, VLAN attachments - Cloud VPN 1. Site-to-site, HA VPN, policy-based/route-based
Topic 2: Configuring managed network services	16%	- Cloud NAT 1. Address allocation, port management - Load balancing 1. Backend services, NEGs, health checks 2. Internal/external, regional/global types - Cloud DNS 1. DNSSEC, logging 2. Public/private zones, forwarding, peering - Cloud CDN 1. Caching rules, origin configuration
Topic 3: Managing, monitoring, and troubleshooting network operations	12%	- Monitoring and logging 1. VPC Flow Logs, Firewall Insights 2. Cloud Logging, Cloud Monitoring 3. Network Intelligence Center - Troubleshooting connectivity 1. VPN/Interconnect issues, BGP errors 2. Load balancer and packet loss diagnosis
Topic 4: Implementing a VPC network	20%	- Configuring VPC resources 1. Networks, subnets, firewall rules/policies 2. Private Google Access, service accounts - Network Connectivity Center 1. Spoke and hub configuration - VPC connectivity 1. Dynamic and static routing 2. VPC Peering, Shared VPC setup - Hierarchical firewalls and security policies 1. Cloud Next Generation Firewall
Topic 5: Configuring cloud network security solutions	12%	- VPC Service Controls 1. Service perimeters, access levels - Secure Web Proxy 1. URL filtering, access control - Cloud Armor 1. Security policies, WAF rules, DDoS protection
Topic 6: Designing and planning a Google Cloud VPC network	26%	- Designing for GKE networking 1. Alias IP ranges, private control plane - Designing hybrid and multi-cloud networks 1. Cloud Router and BGP design 2. Cloud Interconnect / Cloud VPN architecture - Designing overall network architecture 1. High availability, disaster recovery, scalability 2. DNS topology design 3. Network tiers (Premium/Standard) - Designing VPC networks 1. IP address management 2. Private Service Access / Private Service Connect 3. Subnet design and CIDR planning 4. Standalone vs Shared VPC

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Google Cloud Certified - Professional Cloud Network Engineer Sample Questions (Q103-Q108):

NEW QUESTION # 103
Your organization has a critical project that requires a highly secure connectivity tunnel attached to the on-premises network. A Google Cloud network availability of 99.99% must be maintained.
The on-premises network has one device and two interfaces, each with their own external IP addresses. You need to configure the appropriate Cloud HA VPN to address the project requirements. What should you do?

A. Configure an HA VPN gateway with one VPN tunnel and two IP addresses that connect to the on- premises device interface 0. Use Cloud Router BGP MED and AS_PATH attributes to define redundancy with the on-premises device.
B. Configure an HA VPN gateways with two VPN tunnel interfaces that connect to the on-premises device interface 0 and interface 1. Peer each tunnel to each external IP address. Set the REDUNDANCY_TYPE to SINGLE_IP_INTERNALLY_REDUNDANT.
C. Configure an HA VPN gateway with one VPN tunnel and two interfaces that connect to the on- premises device interface 0 and interface 1. Peer each tunnel to each external IP address. Set the REDUNDANCY_TYPE to TWO_IPS_REDUNDANCY.
D. Configure an HA VPN gateway with two VPN tunnel interfaces that connect to the on-premises device interface 0 and interface 1. Peer each tunnel to each external IP address. Set the REDUNDANCY_TYPE to TWO_IPS_REDUNDANCY.

Answer: D

Explanation:
With one on-premises device that has two distinct external IP addresses (one per interface), you should model it as an external VPN gateway with two IPs and use TWO_IPS_REDUNDANCY.
Then, create two HA VPN tunnels (one per HA VPN interface) so each tunnel peers to a different on-premises external IP, eliminating a single point of failure and meeting the 99.99% availability requirement.

NEW QUESTION # 104
Your organization has a Google Cloud Virtual Private Cloud (VPC) with subnets in us-east1, us-west4, and europe-west4 that use the default VPC configuration. Employees in a branch office in Europe need to access the resources in the VPC using HA VPN. You configured the HA VPN associated with the Google Cloud VPC for your organization with a Cloud Router deployed in europe-west4. You need to ensure that the users in the branch office can quickly and easily access all resources in the VPC. What should you do?

A. Configure each subnet's VPN connections to use Cloud VPN to connect to the branch office.
B. Set the advertised routes to Global for the Cloud Router.
C. Configure the VPC dynamic routing mode to Global.
D. Create custom advertised routes for each subnet.

Answer: C

NEW QUESTION # 105
You deployed a hub-and-spoke architecture in your Google Cloud environment that uses VPC Network Peering to connect the spokes to the hub. For security reasons, you deployed a private Google Kubernetes Engine (GKE) cluster in one of the spoke projects with a private endpoint for the control plane. You configured authorized networks to be the subnet range where the GKE nodes are deployed. When you attempt to reach the GKE control plane from a different spoke project, you cannot access it. You need to allow access to the GKE control plane from the other spoke projects.
What should you do?

A. Enable Private Google Access on the subnet where the GKE nodes are deployed.
B. Add a firewall rule that allows port 443 from the other spoke projects.
C. Deploy a proxy in the spoke project where the GKE nodes are deployed and connect to the control plane through the proxy.
D. Configure the authorized networks to be the subnet ranges of the other spoke projects.

Answer: D

Explanation:
If you want to access the control plane from outside VPC, you must authorize at least one address range to have access to the private endpoint.
https://cloud.google.com/kubernetes-engine/docs/how-to/private-clusters

NEW QUESTION # 106
You manage your company's network security and have noticed unusual outbound traffic from a Compute Engine VM that is part of a production subnet. You suspect the VM may be compromised, because it is attempting to communicate with a malicious external IP address. You want to capture detailed metadata for every IP connection to and from this specific VM. including source/destination IP, port, protocol, and the amount of data transferred. What should you do?

A. Create a new egress firewall rule with a priority of 65535 that allows all outbound traffic.
Enable Firewall Rules Logging on this new rule to capture all connection details.
B. Use Packet Mirroring to create a real-time copy of all network packets from the suspected VM.
Forward the copies to a collector VM for analysis.
C. Navigate to Network Intelligence Center, and run a new connectivity test for the VM.
Analyze the report to see which configurations are allowing the traffic.
D. Enable VPC Flow Logs on the subnet containing the VM.
Set the sampling rate to 1.0 for maximum detail, and filter the logs in Cloud Logging for the VM's IP address.

Answer: D

Explanation:
VPC Flow Logs provide detailed, per-connection metadata including source and destination IP addresses, ports, protocol, bytes sent/received, and connection direction. Enabling them on the subnet with a sampling rate of 1.0 ensures full visibility for all traffic, and filtering by the VM's IP in Cloud Logging allows precise monitoring of the suspected compromised instance.

NEW QUESTION # 107
You are designing a Google Kubernetes Engine (GKE) cluster for a rapidly scaling microservices application. The application will have thousands of pods and hundreds of services. The application requires internal pod-to-pod communication and exposure of services internally. You want to follow Google's recommended approach to ensure efficient IP address utilization within your existing Virtual Private Cloud (VPC) subnet while leveraging Google Cloud's native networking capabilities. What should you do?

A. Allocate a primary IP address range for the entire cluster to encompass both node, pod, and service IP addresses.
B. Deploy a route-based GKE cluster and rely on GKE-managed routing tables for all pod and service communication.
C. Configure the GKE cluster to use a VPC-native mode with the main subnets primary IP range for nodes, and separate secondary IP ranges for pods and services.
D. Implement a mesh of Istio service proxies on every pod to manage all internal pod-to-pod communication and service discovery.

Answer: C

Explanation:
Google's recommended model is a VPC-native GKE cluster. In this design, node IPs come from the subnet's primary range, while Pods and Services use separate secondary IP ranges implemented with alias IPs. This provides efficient IP address utilization and uses Google Cloud's native networking model for large-scale Pod and Service networking.

NEW QUESTION # 108
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