PCNE Practice Question: Managing, Monitoring, and Optimising Network Operations
A company is hitting the quota for number of firewall rules per VPC network. They need to add more rules without requesting a quota increase. Which approach can reduce the number of rules?
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
✓
Use hierarchical firewall policies at the folder level
Firewall rules can be consolidated using service accounts or tags. By grouping instances with tags and applying rules to those tags, you can reduce the number of rules. Also, hierarchical firewall policies (at folder or org level) have separate quotas and can offload rules from VPC-level quotas.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Convert all deny rules to allow rules
Why it's wrong here
This does not reduce the count and may weaken security.
- ✓
Use hierarchical firewall policies at the folder level
Why this is correct
Hierarchical policies have their own quotas and can reduce VPC-level rule usage.
- ✗
Use Cloud Firewall to manage rules
Why it's wrong here
There is no 'Cloud Firewall' service separate from VPC firewall rules.
- ✗
Delete unused subnets
Why it's wrong here
Subnets do not affect firewall rule quotas.
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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.