PCNE Implementing VPC Instances Practice Question
A company wants to ensure that Compute Engine instances in a VPC can resolve internal DNS names like 'instance1.us-central1-a.c.myproject.internal'. What is required for this to work?
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
✓
No additional configuration is required; internal DNS resolution works by default.
Google Cloud provides internal DNS resolution for instances within the same VPC network. By default, instances can resolve DNS names for other instances in the same VPC if they are in the same network. There is no additional setup needed; it works out of the box. The DNS name format is [vm-name].[zone].c.[project-id].internal.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Assign a custom DNS server to the VPC using Cloud DNS inbound server policy.
Why it's wrong here
This is for custom DNS resolution, but internal DNS works automatically.
- ✗
Configure a DNS managed zone in Cloud DNS.
Why it's wrong here
No custom DNS configuration is needed; internal DNS is automatically enabled.
- ✓
No additional configuration is required; internal DNS resolution works by default.
Why this is correct
Google Cloud automatically provides internal DNS for instances in the same VPC.
- ✗
Enable Private Google Access on the subnet.
Why it's wrong here
Private Google Access is for reaching Google APIs, not internal DNS.
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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.