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

SectionWeightObjectives
Topic 1: Configuring hybrid and multi-cloud connectivity14%- 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
Topic 2: Implementing a VPC network20%- Configuring VPC resources
  • 1. Networks, subnets, firewall rules/policies
  • 2. Private Google Access, service accounts
- VPC connectivity
  • 1. VPC Peering, Shared VPC setup
  • 2. Dynamic and static routing
- Network Connectivity Center
  • 1. Spoke and hub configuration
- Hierarchical firewalls and security policies
  • 1. Cloud Next Generation Firewall
Topic 3: Managing, monitoring, and troubleshooting network operations12%- Monitoring and logging
  • 1. Cloud Logging, Cloud Monitoring
  • 2. VPC Flow Logs, Firewall Insights
  • 3. Network Intelligence Center
- Troubleshooting connectivity
  • 1. VPN/Interconnect issues, BGP errors
  • 2. Load balancer and packet loss diagnosis
Topic 4: Configuring cloud network security solutions12%- VPC Service Controls
  • 1. Service perimeters, access levels
- Cloud Armor
  • 1. Security policies, WAF rules, DDoS protection
- Secure Web Proxy
  • 1. URL filtering, access control
Topic 5: Designing and planning a Google Cloud VPC network26%- Designing hybrid and multi-cloud networks
  • 1. Cloud Interconnect / Cloud VPN architecture
  • 2. Cloud Router and BGP design
- Designing overall network architecture
  • 1. DNS topology design
  • 2. Network tiers (Premium/Standard)
  • 3. High availability, disaster recovery, scalability
- Designing for GKE networking
  • 1. Alias IP ranges, private control plane
- Designing VPC networks
  • 1. IP address management
  • 2. Subnet design and CIDR planning
  • 3. Standalone vs Shared VPC
  • 4. Private Service Access / Private Service Connect
Topic 6: Configuring managed network services16%- Cloud DNS
  • 1. Public/private zones, forwarding, peering
  • 2. DNSSEC, logging
- Load balancing
  • 1. Internal/external, regional/global types
  • 2. Backend services, NEGs, health checks
- Cloud CDN
  • 1. Caching rules, origin configuration
- Cloud NAT
  • 1. Address allocation, port management

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Google Cloud Certified - Professional Cloud Network Engineer Sample Questions (Q118-Q123):

NEW QUESTION # 118
Your organization wants to deploy HA VPN over Cloud Interconnect to ensure encryption in transit over the Cloud Interconnect connections. You have created a Cloud Router and two encrypted VLAN attachments that have a 5 Gbps capacity and a BGP configuration. The BGP sessions are operational. You need to complete the deployment of the HA VPN over Cloud Interconnect. What should you do?

Answer: A

Explanation:
For secure traffic over Cloud Interconnect, you configure an HA VPN gateway to work with existing VLAN attachments and use the same Cloud Router. This setup integrates seamlessly, leveraging the established BGP sessions for VPN tunnel configurations.


NEW QUESTION # 119
Your organization is deploying a single project for 3 separate departments. Two of these departments require network connectivity between each other, but the third department should remain in isolation. Your design should create separate network administrative domains between these departments. You want to minimize operational overhead.
How should you design the topology?

Answer: B

Explanation:
https://cloud.google.com/vpc/docs/vpc-peering


NEW QUESTION # 120
You are implementing a VPC architecture for your organization by using a Network Connectivity Center hub and spoke topology:
* There is one Network Connectivity Center hybrid spoke to receive on-premises routes.
* There is one VPC spoke that needs to be added as a Network Connectivity Center spoke.
Your organization has limited routable IP space fortheir cloud environment (192.168.0.0/20). The Network Connectivity Center spoke VPC is connected to on-premises with a Cloud Interconnect connection in the us- east4 region. The on-premises IP range is 172.16.0.0/16. You need to reach on-premises resources from multiple Google Cloud regions (us-westl, europe-centrall, and asia-southeastl) and minimize the IP addresses being used. What should you do?

Answer: C

Explanation:
The key requirements are: limited IP space (192.168.0.0/20), reaching on-premises (172.16.0.0/16) from multiple Google Cloud regions (us-west1, europe-central1, asia-southeast1), and minimizing IP addresses used. The Cloud Interconnect connection to on-premises is in us-east4.
Minimize IP addresses and centralized NAT: Since all traffic to on-premises will traverse the Cloud Interconnect in us-east4, it's most efficient to configure a single Private NAT gateway instance in us-east4.
This allows resources from other regions to egress to on-premises through this single NAT gateway, using a minimal NAT subnet (192.168.1.0/24 in this case), thus conserving the limited 192.168.0.0/20 IP space.
Network Connectivity Center Spoke Export Policy: The VPC spoke needs to advertise the NAT subnet to the Network Connectivity Center hub. An export include policy is used to specify which routes (in this case, the
192.168.1.0/24 NAT subnet) should be advertised to the hub.
Global Dynamic Routing: To allow resources in us-west1, europe-central1, and asia-southeast1 to reach the on-premises location through the us-east4 Cloud Interconnect and NAT gateway, the VPC containing these resources (the spoke VPC) must have global dynamic routing enabled. This ensures that routes learned in one region (like the on-premises routes via us-east4) are available to VMs in all other regions of that VPC.
Options A and B configure Private NAT gateways in multiple regions, which consumes more IP addresses than necessary given that the Cloud Interconnect is only in us-east4. Option D uses 172.16.x.x for NAT subnets, which clashes with the on-premises IP range and the requirement to use the 192.168.0.0/20 space for cloud.
Exact Extract:
"Private NAT allows instances with private IP addresses in one VPC network to connect to on-premises or other cloud networks through a NAT IP address in a different region or network."
"To allow VMs in multiple regions to reach a central destination through a NAT gateway located in a specific region, you must configure global dynamic routing on the VPC network. This ensures that routes to the NAT gateway's subnet are propagated across all regions."
"When using Network Connectivity Center spokes, you can use export policies to control which routes are advertised from a spoke to the hub. An include policy specifies the exact prefixes to advertise."Reference:
Google Cloud Private NAT Documentation, Network Connectivity Center Documentation - Spoke policies, VPC Network Documentation - Dynamic routing mode


NEW QUESTION # 121
Question:
You need to enable Private Google Access for some subnets within your Virtual Private Cloud (VPC). Your security team set up the VPC to send all internet-bound traffic back to the on-premises data center for inspection before egressing to the internet, and is also implementing VPC Service Controls for API-level security control. You have already enabled the subnets for Private Google Access. What configuration changes should you make to enable Private Google Access while adhering to your security team's requirements?

Answer: C

Explanation:
For environments requiring API security controls, use restricted.googleapis.com as it restricts access to Google APIs and enforces VPC Service Controls. The custom DNS and routing configuration ensures compliance with security policies by directing all API traffic to restricted endpoints while maintaining Private Google Access.
Reference: Google Cloud - Private Google Access and DNS Configuration


NEW QUESTION # 122
You are increasing your usage of Cloud VPN between on-premises and GCP, and you want to support more traffic than a single tunnel can handle. You want to increase the available bandwidth using Cloud VPN.
What should you do?

Answer: A

Explanation:
https://cloud.google.com/vpn/docs/concepts/classic-topologies


NEW QUESTION # 123
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