PCNE Practice Question: Managing, Monitoring, and Optimising Network Operations
A network engineer wants to capture all network traffic from a set of Compute Engine instances for security monitoring by an IDS appliance. Which Google Cloud service should be used?
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
✓
Packet Mirroring
Packet Mirroring copies traffic from designated instances and sends it to a collector (e.g., IDS appliance) for analysis.
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
Why it's wrong here
Flow Logs capture metadata, not full packets.
- ✓
Packet Mirroring
Why this is correct
Correct: Packet Mirroring clones traffic and forwards it to monitoring tools.
- ✗
Firewall Rules logging
Why it's wrong here
Firewall logs show allow/deny events, not full traffic.
- ✗
Cloud NAT logging
Why it's wrong here
NAT logs show connection events, not packet payloads.
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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.