Pods in namespace 'app' cannot resolve the service 'db' in the same namespace, but they can resolve services in other namespaces. What is the most likely cause?

The kube-dns service is not running

The service 'db' is not created in the 'app' namespace

The pods are using a custom DNS policy that excludes the 'app' namespace

The service 'db' does not have a corresponding Endpoints object

The etcd cluster has lost quorum, and you need to restore it. You have a recent snapshot. What is the correct approach?

Delete the etcd data directory on all members and let them re-sync

Restore the snapshot to a new data directory on all etcd members and restart them

Use etcdctl to add a new member to the existing cluster

Restart the etcd service on all members without restoring

A pod is stuck in Pending because the PVC it references is also Pending. You check the storage class and it exists. What is the most likely cause?

The PV's reclaim policy is set to Retain

The pod's node selector does not match any node

The storage class's provisioner is not running or is misconfigured

The PVC's access mode is ReadWriteOnce, but multiple pods need it

You are asked to provide a health report for a cluster. Which set of commands gives you the most comprehensive view of node and control plane health?

kubectl top nodes and kubectl top pods

kubectl get nodes, kubectl get pods -n kube-system, and kubectl get componentstatuses

kubectl describe node and kubectl describe pod

kubectl get all --all-namespaces

Certified Kubernetes Administrator (CKA)

Domain 2Objective 1

Troubleshoot Clusters and Nodes CKA Practice Questions (Page 6)

Part of the Troubleshooting domain, which accounts for 30% of the CKA exam. Linux Foundation does not publish an official question count, but from its 120-minute exam (~50–80 total, ~15–24 in this domain), expect 3–5 from this objective — we provide 33 practice questions to prepare you well beyond it. (estimate)

33questions here

7free pages

8concepts

30%of the exam

Questions 26–30

26expert · medium
Pods in namespace 'app' cannot resolve the service 'db' in the same namespace, but they can resolve services in other namespaces. What is the most likely cause?
Select an answer first
27expert · hard
The etcd cluster has lost quorum, and you need to restore it. You have a recent snapshot. What is the correct approach?
Select an answer first
28application · medium
A pod is stuck in Pending because the PVC it references is also Pending. You check the storage class and it exists. What is the most likely cause?
Select an answer first
29foundation · easy
Which component is responsible for implementing the Kubernetes Service abstraction by managing network rules on nodes?
Select an answer first
30application · medium
You are asked to provide a health report for a cluster. Which set of commands gives you the most comprehensive view of node and control plane health?
Select an answer first

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