Linux Foundation CKA Exam Certification - Latest CKA Test Labs

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Linux Foundation CKA Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Troubleshooting	30%	- Troubleshoot application failure - Understand how to monitor applications - Troubleshoot networking - Manage container stdout & stderr logs - Evaluate cluster and node logging - Troubleshoot cluster component failure
Topic 2: Cluster Architecture, Installation & Configuration	25%	- Manage the lifecycle of Kubernetes clusters - Use Helm and Kustomize to install cluster components - Understand CRDs, install and configure operators - Create and manage Kubernetes clusters using kubeadm - Prepare underlying infrastructure for installing a Kubernetes cluster - Implement and configure a highly-available control plane - Understand extension interfaces (CNI, CSI, CRI, etc.) - Manage role based access control (RBAC)
Topic 3: Storage	10%	- Understand volume mode, access modes and reclaim policies - Understand persistent volume claims primitive - Understand how to configure applications with persistent storage - Understand Storage Classes and Persistent Volumes
Topic 4: Workloads & Scheduling	15%	- Understand how to run multiple schedulers and configure scheduler policies - Use ConfigMaps and Secrets to configure applications - Understand resource limits and requests - Understand how scheduler works - Understand Deployments and rolling update/rollback - Understand DaemonSets - Use label selectors to schedule Pods - Understand Static Pods
Topic 5: Services & Networking	20%	- Use the Gateway API to manage Ingress traffic - Define and enforce Network Policies - Understand and use CoreDNS - Use ClusterIP, NodePort, LoadBalancer service types and endpoints - Know how to use Ingress controllers and Ingress resources - Understand connectivity between Pods

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Linux Foundation Certified Kubernetes Administrator (CKA) Program Exam Sample Questions (Q78-Q83):

NEW QUESTION # 78
Create a Pod with three busy box containers with commands "ls; sleep 3600;", "echo Hello World; sleep 3600;" and "echo this is the third container; sleep 3600" respectively and check the status

A. // first create single container pod with dry run flag
kubectl run busybox --image=busybox --restart=Always --dry-run
-o yaml -- bin/sh -c "sleep 3600; ls" > multi-container.yaml
// edit the pod to following yaml and create it
apiVersion: v1
kind: Pod
metadata:
labels:
run: busybox
name: busybox
spec:
containers:
- args:
- bin/sh
- -c
- ls; sleep 3600
- echo Hello world; sleep 3600
image: busybox
name: busybox-container-2
- args:
- bin/sh
- -c
- echo this is third container; sleep 3600
image: busybox
name: busybox-container-3
restartPolicy: Always
// Verify
Kubectl get pods
B. // first create single container pod with dry run flag
kubectl run busybox --image=busybox --restart=Always --dry-run
-o yaml -- bin/sh -c "sleep 3600; ls" > multi-container.yaml
// edit the pod to following yaml and create it
apiVersion: v1
kind: Pod
metadata:
labels:
run: busybox
name: busybox
spec:
containers:
- args:
- bin/sh
- -c
- ls; sleep 3600
image: busybox
name: busybox-container-1
- args:
- bin/sh
- -c
- echo Hello world; sleep 3600
image: busybox
name: busybox-container-2
- args:
- bin/sh
- -c
- echo this is third container; sleep 3600
image: busybox
name: busybox-container-3
restartPolicy: Always
// Verify
Kubectl get pods

Answer: B

NEW QUESTION # 79
Create a pod namedkucc8with asingle app container for each of the
following images running inside(there may be between 1 and 4images specified):
nginx + redis + memcached.

Answer:

Explanation:
See the solution below.
Explanation
solution

NEW QUESTION # 80
Create a PersistentVolumeClaim of at least 3Gi storage and access mode ReadWriteOnce and verify status is Bound

A. vim task-pv-claim.yaml
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: task-pv-claim
spec:
storageClassName: ""
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 3Gi
kubectl apply -f task-pv-claim.yaml
//Verify
kubectl get pv
NAME CAPACITY ACCESS
MODES RECLAIM POLICY STATUS CLAIM
STORAGECLASS REASON AGE
task-pv-volume 5Gi RWO
Retain Bound default/task-pv-claim
6m16s
kubectl get pvc
NAME STATUS VOLUME
CAPACITY ACCESS MODES STORAGECLASS AGE
task-pv-claim Bound task-pv-volume
5Gi RWO 6s
B. vim task-pv-claim.yaml
apiVersion: v2
kind: PersistentVolumeClaim
metadata:
name: task-pv-claim
spec:
storageClassName: ""
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 4Gi
kubectl apply -f task-pv-claim.yaml
//Verify
kubectl get pv
NAME CAPACITY ACCESS
MODES RECLAIM POLICY STATUS CLAIM
STORAGECLASS REASON AGE
task-pv-volume 4Gi RWO
Retain Bound default/task-pv-claim
6m16s
kubectl get pvc
NAME STATUS VOLUME
CAPACITY ACCESS MODES STORAGECLASS AGE
task-pv-claim Bound task-pv-volume
5Gi RWO 6s

Answer: A

NEW QUESTION # 81
Fix a node that shows as non-ready

A. Kubectl get nodes
// Check which node shows a not ready
kubectl describe nodes "node-name"
// Login to the node which shows as not ready and check the
process for kubelet, docker , kube-proxy.
// systemctl status kubelet (or) ps -aux | grep -i "processname"
// If the process is not started, then start using
systemctl start kubelet / docker
// Verify
ps -auxxww | grep -i "process-name"
kubectl get nodes
B. Kubectl get nodes
// Check which node shows a not ready
kubectl describe nodes "node-name"
// Login to the node which shows as not ready and check the
systemctl start kubelet / docker
// Verify
ps -auxxww | grep -i "process-name"
kubectl get nodes

Answer: A

NEW QUESTION # 82
Create an nginx pod and list the pod with different levels of verbosity See the solution below.

Answer:

Explanation:
// create a pod
kubectl run nginx --image=nginx --restart=Never --port=80
// List the pod with different verbosity
kubectl get po nginx --v=7
kubectl get po nginx --v=8
kubectl get po nginx --v=9

NEW QUESTION # 83
......

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