ICA Advanced Scenarios Practice Question
In a primary-remote multi-cluster deployment with a shared control plane, a remote cluster service is unreachable. You observe the ServiceEntry is created correctly, but the remote cluster does not have the corresponding Service object. 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
✓
The remote cluster's kubeconfig is missing from the primary cluster's secret store.
In a shared control plane model, the primary cluster's control plane must be able to reach the remote cluster's Kubernetes API server to watch for service changes and push endpoints.
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 mesh expansion service is not running on the remote cluster.
Why it's wrong here
Mesh expansion is used for VMs, not for standard Kubernetes multi-cluster remote join.
- ✓
The remote cluster's kubeconfig is missing from the primary cluster's secret store.
Why this is correct
The primary control plane requires a secret containing the remote cluster's kubeconfig to manage resources.
- ✗
The Istio sidecar injection is disabled on the remote cluster.
Why it's wrong here
Sidecar injection affects traffic routing, not the service discovery mechanism managed by the control plane.
- ✗
The global namespace is missing a ServiceEntry.
Why it's wrong here
The ServiceEntry is present as stated in the prompt.
About these practice questions
One of 292 original ICA practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official CNCF / Linux Foundation exam blueprint
This ICA practice question is part of Courseiva's free CNCF / Linux Foundation 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 ICA exam.