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

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

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Google Cloud Certified - Professional Cloud Network Engineer Sample Questions (Q154-Q159):

NEW QUESTION # 154
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 VPC Network Peering. Use a third-party network appliance as a default gateway to prevent connectivity between the spokes.
B. 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
C. Connect all the spokes to the hub with VPC Network Peering.
D. Connect all the spokes to the hub with Cloud VPN.

Answer: A

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.
:
VPC Network Peering overview | VPC
Quotas and limits | VPC
Hub-and-spoke network architecture | Cloud Architecture Center
Cloud VPN overview | Google Cloud

NEW QUESTION # 155
You recently noticed a recurring daily spike in network usage in your Google Cloud project. You need to identify the virtual machine (VM) instances and type of traffic causing the spike in traffic utilization while minimizing the cost and management overhead required. What should you do?

A. Configure Packet Mirroring to send all traffic to a VM. Use Wireshark on the VM to identity traffic utilization for each VM in the VPC.
B. Enable VPC Flow Logs and send the output to BigQuery for analysis.
C. Deploy a third-party network appliance and configure it as the default gateway. Use the third-party network appliance to identify users with high network traffic.
D. Enable Firewall Rules Logging for all allowed traffic and send the output to BigQuery for analysis.

Answer: A

NEW QUESTION # 156
You are creating a design that will connect your single on-premises data center to a VPC in Google Cloud by using an IPsec VPN connection. The connection must have a minimum SLA of
99.99%. There is a single VPN termination device located in your on-premises data center. The VPN termination device can be configured only with a single public IP address. Your design must also have the least amount of setup effort. What should you do?

A. 1. Create two HA VPN gateways.
2. Create one tunnel on interface 0 of one gateway and create one tunnel on interface 1 of the other gateway.
3. Terminate each of the two tunnels on the single public IP address that is configured on the VPN termination device located in your on-premises data center.
B. 1. Create one HA VPN gateway.
2. Create one tunnel for each of the two HA VPN gateway interfaces.
3. Terminate each of the two tunnels on the single public IP address that is configured on the VPN termination device located in your on-premises data center.
C. 1. Replace the existing on-premises VPN termination device with a new device that is configured with two different public IP addresses.
2. Create one HA VPN gateway.
3. Create one tunnel for each of the two HA VPN gateway interfaces.
4. Terminate each of the two tunnels on one of the two public IP addresses that is configured on the new VPN termination device located in your on-premises data center.
D. 1. Create one Classic VPN gateway and one HA VPN gateway.
2. Create one tunnel on the interface of the Classic VPN gateway and one tunnel on interface 1 of the HA VPN gateway.
3. Terminate each of the two tunnels on the single public IP address that is configured on the VPN termination device located in your on-premises data center.

Answer: B

Explanation:
To achieve a minimum SLA of 99.99% for a VPN connection with a single on-premises VPN device and a single public IP address, the most appropriate solution is to use Google Cloud's HA VPN. HA VPN provides high availability and redundancy even when using a single public IP address on the on-premises VPN termination device.
HA VPN Gateway:
- An HA VPN gateway in Google Cloud has two interfaces (interface 0 and interface 1), each capable of creating a tunnel.
- You can create two tunnels-one on each interface of the HA VPN gateway.
Single public IP on the on-premises device:
- Even with a single public IP address on the on-premises VPN device, you can terminate both tunnels on the same IP. HA VPN supports this configuration, and it ensures redundancy by leveraging two tunnels for failover.
99.99% SLA:
- HA VPN achieves 99.99% availability by using two independent tunnels for redundancy. If one tunnel fails, traffic seamlessly fails over to the other tunnel, maintaining availability.
Least setup effort:
- This approach does not require replacing the existing on-premises VPN device or configuring additional public IP addresses. It leverages the existing infrastructure with minimal configuration changes.

NEW QUESTION # 157
Your organization has an on-premises data center. You need to provide connectivity from the on-premises data center to Google Cloud. Bandwidth must be at least 1 Gbps, and the traffic must not traverse the internet. What should you do?

A. Configure Cross-Cloud Interconnect by creating a VLAN attachment, activate the connection, and then submit the pairing key to your service provider.
B. Configure HA VPN by using high availability gateways and tunnels.
C. Configure Dedicated Interconnect by creating a VLAN attachment, activate the connection, and submit the pairing key to your service provider.
D. Configure Partner Interconnect by creating a VLAN attachment, submit the pairing key to your service provider, and activate the connection.

Answer: D

Explanation:
For private connectivity with at least 1 Gbps bandwidth and without using the public internet, Partner Interconnect is the suitable choice if you do not require the 10 Gbps minimum of Dedicated Interconnect. With Partner Interconnect, you create a VLAN attachment and work with a service provider that facilitates the connection between your on-premises network and Google Cloud. This solution supports connections as low as 50 Mbps and up to 10 Gbps.

NEW QUESTION # 158
Your company has a security team that manages firewalls and SSL certificates. It also has a networking team that manages the networking resources. The networking team needs to be able to read firewall rules, but should not be able to create, modify, or delete them.
How should you set up permissions for the networking team?

A. Assign members of the networking team a custom role with only the compute.networks.* and the compute.firewalls.list permissions.
B. Assign members of the networking team the compute.networkViewer role, and add the compute.networks.use permission.
C. Assign members of the networking team the compute.networkAdmin role.
D. Assign members of the networking team the compute.networkUser role.

Answer: C

Explanation:
Explanation/Reference: https://cloud.google.com/compute/docs/access/iam

NEW QUESTION # 159
......

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