PCNE Configuring Network Services Practice Question
An engineer is configuring a Global HTTPS Load Balancer with a backend service that points to a serverless NEG for Cloud Functions. The health checks are failing. What is the most 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
✓
Serverless NEGs do not support health checks
Serverless NEGs do not support health checks. The load balancer relies on the underlying Cloud Functions being healthy. Health checks must be disabled for serverless backends.
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 health check path is incorrect
Why it's wrong here
Even with correct path, health checks are not supported for serverless NEGs.
- ✓
Serverless NEGs do not support health checks
Why this is correct
Health checks are not supported for serverless NEGs. They must be disabled or omitted.
- ✗
The backend service is not associated with the correct URL map
Why it's wrong here
URL map association would cause routing issues, but health check failure is separate.
- ✗
The health check protocol is set to HTTP instead of HTTPS
Why it's wrong here
Cloud Functions endpoints use HTTPS, but health checks are not used for serverless NEGs.
Quick reference
Cloud Service Model Comparison
| Model | You Manage | Provider Manages | Examples |
|---|---|---|---|
| IaaS | OS, runtime, apps, data | Hardware, hypervisor, networking | EC2, Azure VMs, GCP Compute Engine |
| PaaS | Apps and data | OS, runtime, middleware, hardware | Elastic Beanstalk, Azure App Service |
| SaaS | Data and settings only | Everything else | Microsoft 365, Salesforce, Workday |
| FaaS / Serverless | Function code only | Infra, scaling, runtime | Lambda, Azure Functions, Cloud Run |
| CaaS | Containers and apps | Kubernetes, OS, hardware | EKS, AKS, GKE |
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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.