Serverless computing promises that you never think about servers. You write code, deploy it, and it scales automatically. But the network does not disappear just because the compute is abstracted—it becomes harder to see and easier to misconfigure. How does…

The night before the exam, you do not need another 2,000-word article. You need the numbers, the limits, and the decision shortcuts that the exam tests repeatedly. This article is designed to be your “last look”—the quick reference that cements…

You know the building blocks—VPCs, VPNs, load balancers, firewalls. Now it is time to assemble them into production architectures. The PCNE exam does not just ask you to configure a single resource; it presents a business scenario and expects you…

Networking costs in Google Cloud are the silent budget killer. Compute costs are obvious—you see the VM, you see the price. But network egress charges, Cloud NAT processing fees, and Interconnect port costs hide in the margins of your invoice,…

Theory is comfortable. Troubleshooting is not. The PCNE exam does not just test whether you know what a firewall rule is—it tests whether you can diagnose why a specific connection is failing when five different components are involved. This article…

In a world where a single VPC can span the globe and a single firewall misconfiguration can expose an entire organization, manual configuration through the Cloud Console is not just inefficient—it is dangerous. Clicking through the UI to create subnets,…

There is a level of Google Cloud networking that most documentation glosses over. These are the features that only matter when your architecture is complex enough to need them—when standard routing is not flexible enough, when BGP convergence is too…

Every certification exam has topics that feel “minor” until you encounter three questions about them in a row. These are the concepts that sit between the major pillars—not important enough for their own dedicated section in the study guide, but…

Once you have mastered the core VPC, the VPN, the load balancers, and the firewalls, there is a layer of advanced services that the PCNE exam tests at the edges. These are the services that most engineers never touch in…

Building a network is one thing. Keeping it running is another. In production, the most dangerous state is not “broken”—it is “silently degraded.” A misconfigured firewall rule that blocks 5% of traffic. A route that sends packets on a suboptimal…