PCNE Configuring Network Services Practice Question
You are configuring a Regional Internal HTTP(S) Load Balancer for a service that must only be accessible from within a VPC. The backend is a zonal NEG of Compute Engine instances. The load balancer is not receiving traffic. What is a likely cause?
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
✓
The backend service is in a different region than the forwarding rule
Internal HTTP(S) LB requires an internal forwarding rule in the same region as the backend. The forwarding rule must use an internal IP address, and the backend service must be in the same region.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The zonal NEG is in a different zone than the forwarding rule
Why it's wrong here
Zonal NEG can be in any zone within the same region.
- ✗
The health check is using TCP but the instances expect HTTP
Why it's wrong here
Health check protocol mismatch would cause unhealthy instances, but not complete absence of traffic.
- ✓
The backend service is in a different region than the forwarding rule
Why this is correct
Backend service and forwarding rule must be in the same region.
- ✗
The forwarding rule uses an external IP address
Why it's wrong here
Internal LB requires an internal IP.
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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.