PCNE Practice Question: Managing, Monitoring, and Optimising Network Operations
A company is experiencing a BGP session flap between Cloud Router and an on-premises router. Which THREE actions should the engineer take to diagnose the issue?
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
✓
Check VPN tunnel status and IKE parameters
Check Cloud Router logs for BGP events, verify firewall rules allow BGP traffic (TCP 179), and check VPN tunnel status if using VPN. VPC Flow Logs and Network Topology are less relevant.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Check VPN tunnel status and IKE parameters
Why this is correct
If BGP over VPN, tunnel issues can cause flaps.
- ✓
Examine Cloud Router logs for BGP state changes
Why this is correct
Cloud Router logs BGP events.
- ✗
Enable VPC Flow Logs on the subnet
Why it's wrong here
Flow Logs show traffic but not BGP specifics.
- ✗
Review Network Topology for path changes
Why it's wrong here
Network Topology is static; not for real-time BGP diagnosis.
- ✓
Verify firewall rules allow tcp/179 between peer IPs
Why this is correct
BGP uses TCP 179.
Go deeper
Related to this question
About these practice questions
This PCNE question is part of Courseiva's 961-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
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.