PCNE Implementing a Virtual Private Cloud Practice Question
Network Topology
Refer to the exhibit. Instances in subnet-b cannot access the internet through Cloud NAT. What is the most likely reason?
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
✓
Subnet-b is not included in the Cloud NAT configuration.
The Cloud NAT configuration only includes subnet-a, so subnet-b is not NATed.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The firewall rules in subnet-b block egress.
Why it's wrong here
Without more information, this is possible but less likely given the exhibit shows a missing subnet.
- ✗
The NAT IP address pool is exhausted.
Why it's wrong here
If pool was exhausted, instances in subnet-a would also be affected.
- ✗
Subnet-b has overlapping subnets.
Why it's wrong here
Overlapping subnets are not relevant to Cloud NAT.
- ✓
Subnet-b is not included in the Cloud NAT configuration.
Why this is correct
The exhibit shows only subnet-a in the NAT, so subnet-b has no NAT.
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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.