GCP Network Engineer Foundations
A structured GCP Network Engineer course covering VPC, load balancing, security, hybrid, observability, and optimization, with linked practice questions.
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What you will learn
- Describe VPC and networking fundamentals.
- Explain load balancing.
- Describe network security.
- Explain hybrid connectivity.
- Describe observability and optimization.
Before you start
- Basic GCP knowledge is helpful.
- Some networking fundamentals are recommended.
- No previous Google certification is required.
Lesson 1 VPC and Networking Fundamentals
The Google Cloud Network Engineer exam validates skills for designing and operating cloud networks. A VPC is a global virtual private network that contains subnets, routes, and firewalls. Subnets are IP ranges within a VPC, and firewall rules control traffic. VPC peering connects two VPCs privately, and Shared VPC lets a host project share subnets with service projects. Static routes are manually configured, while dynamic routes are learned through BGP. IP addresses identify resources. Engineers design subnets, routes, and firewalls to meet security and performance requirements.
Example
Example: An organization uses Shared VPC, VPC peering between environments, and firewall rules to isolate development from production.Lesson 2 Load Balancing and Traffic Management
Cloud Load Balancing distributes traffic across instances and regions. Backend services group backends, and health checks verify they can serve traffic. Forwarding rules route traffic to targets, and URL maps route HTTP requests by path. Target pools group instances, and session affinity keeps clients on the same backend. Global load balancers route across regions, while regional load balancers serve one region. Engineers choose load balancing types based on protocol, scale, and geography.
Example
Example: A global HTTP load balancer uses a URL map, health checks, and session affinity to route users to healthy backends in the nearest region.Lesson 3 Network Security
Network security protects traffic and services. Cloud Armor provides WAF rules and DDoS protection. Identity-Aware Proxy controls access based on identity and context. Private Google Access lets VMs reach Google APIs without public IPs, and Cloud NAT provides outbound internet access for private instances. VPC Service Controls creates security perimeters, packet mirroring copies traffic for analysis, and firewall policies apply rules across the hierarchy. Encryption in transit protects data with TLS. Engineers apply least-privilege networking and monitor security policies.
Example
Example: A web application uses Cloud Armor, IAP for admin access, and a VPC Service Controls perimeter to protect sensitive data.Lesson 4 Hybrid Connectivity and Routing
Hybrid connectivity joins on-premises networks with Google Cloud. Cloud VPN creates encrypted tunnels over the internet, while Cloud Interconnect provides private physical connections. Dedicated Interconnect uses direct links, and Partner Interconnect uses supported partners. Cloud Router exchanges BGP routes dynamically, and BGP is the routing protocol. Peering connects networks directly, and Network Connectivity Center manages hubs. Hybrid networks require careful routing, security, and monitoring. Engineers choose connectivity based on bandwidth, latency, and cost.
Example
Example: A data center uses Cloud Interconnect for high-bandwidth traffic, Cloud VPN as a backup, and Cloud Router to exchange BGP routes.Lesson 5 Observability and Optimization
Network observability helps engineers detect and fix problems. VPC Flow Logs capture traffic metadata, packet capture records traffic, and Cloud Monitoring collects metrics. Cloud Logging stores logs, uptime checks verify endpoints, and traceroute shows packet paths. Ping tests reachability, and network intelligence provides diagnostics. Optimization uses Cloud CDN, caches, and tier selection to improve performance. Bandwidth measures capacity, latency measures delay, and quotas limit resources. Engineers review flow logs, monitor dashboards, and optimize cost and performance.