CKAD Dump 5

Question 1

Which resource limits the total CPU and memory that all pods in a namespace can consume?

Accepted Answer

ResourceQuota

Answer

ResourceQuota enforces aggregate resource consumption limits across all objects in a namespace.

Question 2

You need a stable network identity for each pod in a stateful application. Which resource provides this?

Accepted Answer

StatefulSet with Headless Service

Answer

StatefulSet paired with a Headless Service gives each pod a stable DNS name like pod-0.service.namespace.svc.cluster.local.

Question 3

Which init container rule is true?

Accepted Answer

All init containers must complete successfully before app containers start

Answer

Init containers run sequentially to completion before any app containers in the pod start.

Question 4

How do you add a taint to a node named 'node1' that prevents scheduling unless tolerated?

Accepted Answer

kubectl taint node node1 key=value:NoSchedule

Answer

kubectl taint node applies a taint; NoSchedule effect prevents pods without a matching toleration from being scheduled.

Question 5

A ConfigMap key-value is projected into a pod as an environment variable. Which syntax is correct in the pod spec?

Accepted Answer

env: [{name: MY_VAR, valueFrom: {configMapKeyRef: {name: mycm, key: mykey}}}]

Answer

valueFrom.configMapKeyRef references a specific key from a named ConfigMap to populate an environment variable.

CKAD - Certified Kubernetes Application Developer Practice Test