PCNE Practice Question: Managing, Monitoring, and Optimising Network Operations
A company wants to reduce egress costs for traffic going to Google APIs (e.g., Cloud Storage, BigQuery) from Compute Engine instances. Which configuration should they use?
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
✓
Enable Private Google Access on the subnet
Private Google Access allows instances without external IPs to reach Google APIs over the internal network, avoiding internet egress charges.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use VPC Flow Logs to monitor traffic
Why it's wrong here
Monitoring does not reduce costs.
- ✗
Assign external IPs to the instances
Why it's wrong here
External IPs incur egress costs.
- ✓
Enable Private Google Access on the subnet
Why this is correct
Correct: Private Google Access routes traffic to Google APIs via internal IPs, free of egress charges.
- ✗
Set up Cloud NAT for the instances
Why it's wrong here
Cloud NAT uses external IPs and incurs egress costs.
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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.