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PROFESSIONAL-CLOUD-NETWORK-ENGINEER · Question #16

You are designing a Google Kubernetes Engine (GKE) cluster for your organization. The current cluster size is expected to host 10 nodes, with 20 Pods per node and 150 services. Because of the…

The correct answer is A. Create a subnet of size/25 with 2 secondary ranges of: /17 for Pods and /21 for Services. When you create a VPC-native cluster, you specify a subnet in a VPC network. The cluster uses three unique subnet IP address ranges: It uses the subnet's primary IP address range for all node IP addresses. It uses one secondary IP address range for all Pod IP addresses. It uses…

Submitted by haruto_sh· Apr 18, 2026Designing, planning, and prototyping a Google Cloud network

Question

You are designing a Google Kubernetes Engine (GKE) cluster for your organization. The current cluster size is expected to host 10 nodes, with 20 Pods per node and 150 services. Because of the migration of new services over the next 2 years, there is a planned growth for 100 nodes, 200 Pods per node, and 1500 services. You want to use VPC-native clusters with alias IP ranges, while minimizing address consumption. How should you design this topology?

Options

  • ACreate a subnet of size/25 with 2 secondary ranges of: /17 for Pods and /21 for Services.
  • BCreate a subnet of size/28 with 2 secondary ranges of: /24 for Pods and /24 for Services.
  • CUse gcloud container clusters create [CLUSTER NAME]--enable-ip-alias to create a VPC-native
  • DUse gcloud container clusters create [CLUSTER NAME] to create a VPC-native cluster.

How the community answered

(31 responses)
  • A
    84% (26)
  • B
    3% (1)
  • C
    10% (3)
  • D
    3% (1)

Explanation

When you create a VPC-native cluster, you specify a subnet in a VPC network. The cluster uses three unique subnet IP address ranges: It uses the subnet's primary IP address range for all node IP addresses. It uses one secondary IP address range for all Pod IP addresses. It uses another secondary IP address range for all Service (cluster IP) addresses. https://cloud.google.com/kubernetes-engine/docs/concepts/alias-ips#cluster_sizing

Topics

#GKE Networking#VPC-native#IP Address Management#Network Design

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