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PCNE Practice Question: Designing, Planning, and Prototyping a GCP Network

A startup is deploying its first application on Google Cloud and needs to create a VPC network. They want to avoid manual subnet planning and prefer that Google automatically creates subnets in each region as they expand. Which VPC type should they choose?

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

Auto mode VPC

Auto mode VPCs automatically create subnets in each region with predetermined IP ranges, simplifying initial setup. Custom mode VPCs require manual subnet creation.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • Shared VPC

    Why it's wrong here

    Shared VPC is a feature for sharing subnets across projects, not a VPC type.

  • Auto mode VPC

    Why this is correct

    Auto mode VPCs automatically create subnets in each region, which is ideal for avoiding manual subnet planning.

  • VPC Network Peering

    Why it's wrong here

    VPC Network Peering connects two VPCs, not a type of VPC.

  • Custom mode VPC

    Why it's wrong here

    Custom mode VPCs require manual subnet creation, which does not meet the requirement to avoid manual planning.

Visual reference

192.168.1.0 /24 256 addresses (254 usable) 192.168.1.0 /25 Subnet A 128 addr (126 usable) 192.168.1.128 /25 Subnet B 128 addr (126 usable) Borrowing 1 bit from host portion creates 2 subnets (/25)

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JA

Written by Johnson Ajibi, MSc IT Security

Senior Network & Security Engineer · founder of Courseiva

This PCNE practice question is part of Courseiva's free Google Cloud certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PCNE exam.