Why namespaces provide isolation in Kubernetes - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a new namespace named 'dev'.

Kubernetes

kubectl create namespace [1]

Drag options to blanks, or click blank then click option'

Atest

Bproduction

Cdefault

Ddev

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'default' instead of 'dev' creates the default namespace, not a new one.

The command kubectl create namespace dev creates a new namespace called 'dev'.

2fill in blank

medium

Complete the command to list all namespaces in the cluster.

Kubernetes

kubectl get [1]

Drag options to blanks, or click blank then click option'

Anamespaces

Bpods

Cservices

Dnodes

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'pods' lists pods, not namespaces.

The command kubectl get namespaces lists all namespaces in the cluster.

3fill in blank

hard

Fix the error in the command to delete the 'test' namespace.

Kubernetes

kubectl delete [1] test

Drag options to blanks, or click blank then click option'

Anode

Bnamespace

Cservice

Dpod

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'pod' deletes a pod, not the namespace.

To delete a namespace, use kubectl delete namespace test. Using 'pod' or others will delete wrong resources or cause errors.

4fill in blank

hard

Fill both blanks to run a pod named 'web' in the 'prod' namespace.

Kubernetes

kubectl run web --image=nginx --namespace=[1] --restart=[2]

Drag options to blanks, or click blank then click option'

Aprod

BNever

CAlways

Ddev

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'dev' namespace instead of 'prod'.

Using 'Always' restart policy creates a Deployment, not a pod.

The command kubectl run web --image=nginx --namespace=prod --restart=Never creates a pod named 'web' in the 'prod' namespace.

5fill in blank

hard

Fill all three blanks to create a resource quota named 'quota1' in namespace 'test' limiting pods to 5.

Kubernetes

kubectl create quota [1] --namespace=[2] --hard=[3]

Drag options to blanks, or click blank then click option'

Aquota1

Btest

Cpods=5

Dpods=10

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'pods=10' sets a higher limit than asked.

Wrong namespace name causes quota to apply elsewhere.

This command creates a resource quota named 'quota1' in the 'test' namespace limiting pods to 5.