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Cluster Mesh Questions

Practice questions for Cluster Mesh topic in Cilium Certified Associate. 20 questions covering this domain.

20 questions4 easy8 medium8 hard
Q1
medium

Which prerequisite is required before connecting clusters with Cilium Cluster Mesh?

Q2
hard

Two clusters expose a Service with the same name and namespace and annotate it as service.cilium.io/global=true. Later, one cluster sets service.ciliu...

Q3
hard

An operator runs cilium clustermesh connect from cluster A to cluster B. What additional step is required to establish connectivity in the reverse dir...

Q4
easy

What does Cluster Mesh extend across multiple clusters?

Q5
medium

When preparing clusters for Cluster Mesh, what identifier pair must be unique per cluster?

Q6
hard

An operator sets up Cluster Mesh between cluster A (cluster-id=1) and cluster B (cluster-id=1). Both clusters were configured with the same cluster ID...

Q7
hard

A team runs a globally available Service across three clusters with Cluster Mesh. They want the Service in cluster C to only serve as a failover targe...

Q8
easy

What is the maximum number of clusters supported in a single Cilium Cluster Mesh?

Q9
medium

After enabling Cluster Mesh, an operator runs `cilium clustermesh status` and sees that one of the remote clusters shows `connection status: not ready...

Q10
medium

A DevOps team sets up Cluster Mesh between two clusters. After connecting the clusters, they deploy a Service in cluster A and annotate it with `servi...

Q11
medium

How do you create a global Service that load balances across clusters in Cluster Mesh?

Q12
medium

What does setting clustermesh.cacheTTL to a value greater than 0 do?

Q13
hard

When is EndpointSlice synchronization for global Services actually needed in Cluster Mesh?

Q14
easy

What is the default status of KVStoreMesh starting with Cilium v1.16?

Q15
hard

A global NodePort Service in Cluster Mesh is accessed from outside the cluster, but it only balances to local backends. Which documented limitation be...

Q16
medium

When preparing two clusters for Cluster Mesh, which identification requirement must be satisfied?

Q17
medium

How many times must cilium clustermesh connect be run to establish connectivity between two clusters?

Q18
hard

An architect wants to support 511 connected clusters in one mesh. What tradeoff and constraint do the docs require?

Q19
easy

By default, how many clusters can be connected together in one Cilium Cluster Mesh?

Q20
hard

A remote cluster goes offline, but clients still attempt to reach its old global-service backends. Which setting is designed to stop Cilium from using...

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