PCNE Practice Question: Managing, Monitoring, and Optimising Network Operations
A company is using Cloud NAT to allow private VMs to access the internet. They want to troubleshoot connectivity failures and analyze connection attempts that were dropped due to NAT resource exhaustion. What should they enable?
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
✓
Cloud NAT logging
Cloud NAT logging captures connection and allocation failures, which helps troubleshoot NAT resource exhaustion and other issues.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
VPC Flow Logs on the subnet
Why it's wrong here
VPC Flow Logs show traffic flows but do not log NAT-specific failures.
- ✓
Cloud NAT logging
Why this is correct
Cloud NAT logs record connection and allocation failures, including resource exhaustion.
- ✗
Firewall rule logging
Why it's wrong here
Firewall rule logs show allow/deny events but not NAT failures.
- ✗
Packet Mirroring
Why it's wrong here
Packet Mirroring copies traffic for analysis but does not log NAT failures.
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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.