CKAD CKAD 3

Question 1

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

Accepted Answer

ResourceQuota

Answer

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

Question 2

A Pod must run on nodes labeled 'disktype=ssd'. Which feature achieves this without requiring tolerations?

Accepted Answer

Node affinity

Answer

Node affinity uses node labels to constrain which nodes a Pod can be scheduled on, without needing tolerations.

Question 3

Which init container behavior is correct?

Accepted Answer

Init containers run to completion before app containers start

Answer

Init containers must run and complete successfully in sequence before any application containers in the Pod start.

Question 4

You want to expose an application to external traffic using a hostname-based routing rule. Which object should you create?

Accepted Answer

Ingress

Answer

An Ingress resource defines HTTP/HTTPS routing rules based on hostnames and paths, routing traffic to backend Services.

Question 5

What is the purpose of a readiness probe?

Accepted Answer

Remove the Pod from Service endpoints when it cannot serve traffic

Answer

A failing readiness probe causes the kubelet to remove the Pod's IP from Service endpoint lists so traffic is not routed to it.

CKAD - Certified Kubernetes Application Developer Practice Test