CKAD Pod Design and Deployments 3

Question 1

What does a CronJob's 'concurrencyPolicy: Forbid' setting do?

Accepted Answer

Prevents a new Job from starting if a previous one is still running

Answer

'Forbid' skips creating a new Job if the previous scheduled Job hasn't completed yet.

Question 2

Which resource type guarantees that a pod runs on every (or selected) node in the cluster?

Accepted Answer

DaemonSet

Answer

A DaemonSet ensures one pod replica runs on all (or selected) nodes, used for node-level agents like logging or monitoring.

Question 3

A Job has 'completions: 5' and 'parallelism: 2'. How does it execute?

Accepted Answer

2 pods run at a time until 5 successful completions are reached

Answer

With parallelism 2, Kubernetes runs up to 2 pods concurrently until the total of 5 successful completions is reached.

Question 4

What is the correct apiVersion for a CronJob in modern Kubernetes (1.21+)?

Accepted Answer

batch/v1

Answer

CronJob graduated to 'batch/v1' in Kubernetes 1.21, replacing the older 'batch/v1beta1'.

Question 5

Which field on a Pod spec ensures the pod is not scheduled until a specific node is explicitly assigned?

Accepted Answer

nodeName

Answer

Setting 'nodeName' directly assigns a pod to a specific node, bypassing the scheduler entirely.

CKAD - Certified Kubernetes Application Developer Practice Test