Administration KCNA Practice Questions (Page 1)

Questions 1–5

1. 1foundation · easy

   A pod is in a CrashLoopBackOff state. What is the most likely cause?

   • AThe image pull is failing
   • BThe pod is not scheduled due to insufficient resources
   • CThe container is failing to start and is being restarted repeatedly
   • DThe node is out of memory
   Reveal Solution Discussion Select an answer first
2. 2application · medium

   A company runs multiple teams on the same cluster. Each team should only see and manage its own resources. They want to prevent teams from accidentally modifying each other's deployments. What should they implement?

   • AAssign each team a different service account and use that for all their deployments.
   • BCreate a separate cluster per team to ensure complete isolation.
   • CUse network policies to isolate each team's pods.
   • DCreate a separate namespace per team and grant each team RBAC permissions only within their namespace.
   Reveal Solution Discussion Select an answer first
4. 3expert · hard

   A pod is in a 'CrashLoopBackOff' state. The team checks the logs and sees an error about a missing environment variable. They fix the deployment by adding the environment variable, but the pod still crashes. What should they do next?

   • ADelete the pod and recreate it manually.
   • BRestart the kubelet on the node.
   • CCheck the pod events to see if the container is failing for a different reason.
   • DIncrease the pod's resource limits.
   Reveal Solution Discussion Select an answer first
5. 4expert · hard

   A cluster administrator is setting up monitoring for a cluster and wants to collect metrics from all nodes and pods, as well as logs from all containers. Which combination of tools should they use?

   • Akubectl describe for both metrics and logs.
   • BPrometheus for metrics and a log aggregator like Fluentd or Loki for logs.
   • CPrometheus for logs and a log aggregator for metrics.
   • Dkubectl logs for both metrics and logs.
   Reveal Solution Discussion Select an answer first
6. 5application · medium

   A pod is repeatedly being killed with an 'OOMKilled' status. The team wants to ensure the container has enough memory to run without being killed. What should they configure?

   • ARemove the memory limit entirely.
   • BIncrease the CPU limit for the container.
   • CSet a memory request higher than the limit.
   • DIncrease the memory limit for the container.
   Reveal Solution Discussion Select an answer first