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Best Quality Linux Foundation CKA Exam Questions
The Need for CNCF CKA Certification Exam
The CNCF Certified Kubernetes Administrator exam is designed to test the knowledge of candidates on deploying, managing, and troubleshooting applications on Kubernetes clusters. Answers to the CNCF Certified Kubernetes Administrator exam questions can be found in the official study guide. Real world experience and hands-on configuration and troubleshooting is critical to passing any certification exam. Real world experience will put candidates in good stead for the CNCF Certified Kubernetes Administrator exam. Download the study guide and start studying for the exam. CNCF CKA exam dumps can be accessed from certain test providers. The CNCF CKA exam dumps will provide the candidate with the knowledge to pass the exam. Application of knowledge from the study guide to real life configuration will help candidates pass the CNCF Certified Kubernetes Administrator exam. Updates on the official definition of each question will be available on the Brightwork website. Understanding questions on Kubernetes in the CNCF Certified Kubernetes Administrator exam is subject to change. Understanding real-world configuration and troubleshooting is central to passing the CNCF Certified Kubernetes Administrator exam.
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NEW QUESTION 32
Get the deployment rollout status
Answer:
Explanation:
kubectl rollout status deploy webapp
NEW QUESTION 33
Score: 7%
Task
First, create a snapshot of the existing etcd instance running at https://127.0.0.1:2379, saving the snapshot to
/srv/data/etcd-snapshot.db.
Next, restore an existing, previous snapshot located at /var/lib/backup/etcd-snapshot-previo us.db
Answer:
Explanation:
See the solution below.
Explanation
Solution:
#backup
ETCDCTL_API=3 etcdctl --endpoints="https://127.0.0.1:2379" --cacert=/opt/KUIN000601/ca.crt
--cert=/opt/KUIN000601/etcd-client.crt --key=/opt/KUIN000601/etcd-client.key snapshot save
/etc/data/etcd-snapshot.db
#restore
ETCDCTL_API=3 etcdctl --endpoints="https://127.0.0.1:2379" --cacert=/opt/KUIN000601/ca.crt
--cert=/opt/KUIN000601/etcd-client.crt --key=/opt/KUIN000601/etcd-client.key snapshot restore
/var/lib/backup/etcd-snapshot-previoys.db
NEW QUESTION 34
Schedule a pod as follows:
* Name: nginx-kusc00101
* Image: nginx
* Node selector: disk=ssd
Answer:
Explanation:
See the solution below.
Explanation
solution
NEW QUESTION 35
Create a ETCD backup of kubernetes cluster
Note : You don't need to memorize command, refer -
https://kubernetes.io/docs/tasks/administer-cluster/configureupgrade-etcd/ during exam
- A. ETCDCTL_API=3 etcdctl --endpoints=[ENDPOINT] --cacert=[CA CERT]
--cert=[ETCD SERVER CERT] --key=[ETCD SERVER KEY] snapshot save
[BACKUP FILE NAME]
In exam, cluster setup is done with kubeadm , this means ETCD
used by the kubernetes cluster is coming from static pod.
kubectl get pod -n kube-system
kubectl describe pod etcd-master -n kube-system
You can locate the information on
endpoint: - advertise-client-urls=https://172.17.0.15:2379
ca certificate: - trusted-cafile=/etc/kubernetes/pki/etcd/ca.crt
server certificate : - certfile=/etc/kubernetes/pki/etcd/server.crt
key: - key-file=/etc/kubernetes/pki/etcd/server.key
To Create backup
export ETCDCTL_API=3
(or)
ETCDCTL_API=3 etcdctl ETCDCTL_API=3 etcdctl --
endpoints=https://172.17.0.15:2379 --
cacert=/etc/kubernetes/pki/etcd/ca.crt --
cert=/etc/kubernetes/pki/etcd/server.crt --
key=/etc/kubernetes/pki/etcd/server.key snapshot save etcdsnapshot.db
//Verify
ETCDCTL_API=3 etcdctl --write-out=table snapshot status
snapshot.db - B. ETCDCTL_API=3 etcdctl --endpoints=[ENDPOINT] --cacert=[CA CERT]
--cert=[ETCD SERVER CERT] --key=[ETCD SERVER KEY] snapshot save
[BACKUP FILE NAME]
In exam, cluster setup is done with kubeadm , this means ETCD
used by the kubernetes cluster is coming from static pod.
kubectl get pod -n kube-system
kubectl describe pod etcd-master -n kube-system
You can locate the information on
endpoint: - advertise-client-urls=https://172.16.0.18:2379
ca certificate: - trusted-cafile=/etc/kubernetes/pki/etcd/ca.crt
server certificate : - certfile=/etc/kubernetes/pki/etcd/server.crt
key: - key-file=/etc/kubernetes/pki/etcd/server.key
To Create backup
export ETCDCTL_API=3
(or)
ETCDCTL_API=3 etcdctl ETCDCTL_API=3 etcdctl --
endpoints=https://172.17.0.15:2379 --
key=/etc/kubernetes/pki/etcd/server.key snapshot save etcdsnapshot.db
//Verify
ETCDCTL_API=3 etcdctl --write-out=table snapshot status
snapshot.db
Answer: A
NEW QUESTION 36
Set the node namedek8s-node-1asunavailable and reschedule all thepods running on it.
Answer:
Explanation:
See the solution below.
Explanation
solution
NEW QUESTION 37
// Create a configmap
kubectl create configmap redis-config --from-file=/opt/redisconfig
// Verify
kubectl get configmap redis-config -o yaml
// first run this command to save the pod yml
kubectl run redis-pod --image=redis --restart=Always --dry-run
-o yaml > redis-pod.yml
// edit the yml to below file and create
apiVersion: v1
kind: Pod
metadata:
name: redis
spec:
containers:
- name: redis
image: redis
env:
- name: MASTER
value: "true"
ports:
- containerPort: 6379
volumeMounts:
- mountPath: /redis-master-data
name: data
- mountPath: /redis-master
name: config
volumes:
- name: data
emptyDir: {}
- name: config
configMap:
name: example-redis-config
- A. items:
- key: redis-config
path: redis.conf
cf
// // Verify
K kubectl exec -it redis - cat /redis-master-data/redis.conf - B. items:
- key: redis-config
path: redis.conf
cf
kk kubectl apply -f redis-pod.yml
// // Verify
K kubectl exec -it redis - cat /redis-master-data/redis.conf
Answer: B
NEW QUESTION 38
List all the pods sorted by created timestamp
Answer:
Explanation:
kubect1 get pods--sort-by=.metadata.creationTimestamp
NEW QUESTION 39
From the pod label name=cpu-utilizer, find pods running high CPU workloads and write the name of the pod consuming most CPU to the file /opt/KUTR00102/KUTR00102.txt (which already exists).
Answer:
Explanation:
See the solution below.
Explanation
solution
NEW QUESTION 40
Updates to dynamic user group membership are automatic therefore using dynamic user groups instead of static group objects allows you to:
- A. respond to changes in user behavior or potential threats without automatic policy changes
- B. respond to changes in user behavior or potential threats using manual policy changes
- C. respond to changes in user behavior or potential threats without manual policy changes
- D. respond to changes in user behavior and confirmed threats with manual policy changes
Answer: C
NEW QUESTION 41
Check to see how many worker nodes are ready (not including nodes tainted NoSchedule) and write the number to /opt/KUCC00104/kucc00104.txt.
Answer:
Explanation:
See the solution below.
Explanation
solution
F:\Work\Data Entry Work\Data Entry\20200827\CKA\15 B.JPG
F:\Work\Data Entry Work\Data Entry\20200827\CKA\15 C.JPG
NEW QUESTION 42
Get list of all pods in all namespaces and write it to file "/opt/pods-list.yaml"
Answer:
Explanation:
kubectl get po -all-namespaces > /opt/pods-list.yaml
NEW QUESTION 43
Scale the deployment from 5 replicas to 20 replicas and verify
Answer:
Explanation:
kubectl scale deploy webapp --replicas=20 kubectl get deploy webapp kubectl get po -l app=webapp
NEW QUESTION 44
Create a deployment as follows:
Name: nginx-random
Exposed via a service nginx-random
Ensure that the service & pod are accessible via their respective DNS records The container(s) within any pod(s) running as a part of this deployment should use the nginx Image Next, use the utility nslookup to look up the DNS records of the service & pod and write the output to
/opt/KUNW00601/service.dns and /opt/KUNW00601/pod.dns respectively.
Answer:
Explanation:
See the solution below.
Explanation
Solution:
F:\Work\Data Entry Work\Data Entry\20200827\CKA\17 C.JPG
F:\Work\Data Entry Work\Data Entry\20200827\CKA\17 D.JPG
F:\Work\Data Entry Work\Data Entry\20200827\CKA\17 E.JPG
NEW QUESTION 45
Check the rollout history and make sure everything is ok after the update
- A. kubectl rollout history deploy webapp
kubectl get deploy webapp --show-labels
kubectl get rs -
kubectl get po -l app=webapp - B. kubectl rollout history deploy webapp
kubectl get deploy webapp --show-labels
kubectl get rs -l app=webapp
kubectl get po -l app=webapp
Answer: B
NEW QUESTION 46
Perform the following tasks:
* Add an init container to hungry-bear (which has been defined in spec file
/opt/KUCC00108/pod-spec-KUCC00108.yaml)
* The init container should create an empty file named/workdir/calm.txt
* If /workdir/calm.txt is not detected, the pod should exit
Answer:
Explanation:
* Once the spec file has been updated with the init container definition, the pod should be created See the solution below.
Explanation
solution
NEW QUESTION 47
Score: 7%
Task
Reconfigure the existing deployment front-end and add a port specification named http exposing port 80/tcp of the existing container nginx.
Create a new service named front-end-svc exposing the container port http.
Configure the new service to also expose the individual Pods via a NodePort on the nodes on which they are scheduled.
Answer:
Explanation:
See the solution below.
Explanation
Solution:
kubectl get deploy front-end
kubectl edit deploy front-end -o yaml
#port specification named http
#service.yaml
apiVersion: v1
kind: Service
metadata:
name: front-end-svc
labels:
app: nginx
spec:
ports:
- port: 80
protocol: tcp
name: http
selector:
app: nginx
type: NodePort
# kubectl create -f service.yaml
# kubectl get svc
# port specification named http
kubectl expose deployment front-end --name=front-end-svc --port=80 --tarport=80 --type=NodePort
NEW QUESTION 48
Create a pod as follows:
* Name: mongo
* Using Image: mongo
* In a new Kubernetes namespace named
Answer:
Explanation:
See the solution below.
Explanation
solution
NEW QUESTION 49
Score: 7%
Task
First, create a snapshot of the existing etcd instance running at https://127.0.0.1:2379, saving the snapshot to /srv/data/etcd-snapshot.db.
Next, restore an existing, previous snapshot located at /var/lib/backup/etcd-snapshot-previo us.db
Answer:
Explanation:
Solution:
#backup
ETCDCTL_API=3 etcdctl --endpoints="https://127.0.0.1:2379" --cacert=/opt/KUIN000601/ca.crt --cert=/opt/KUIN000601/etcd-client.crt --key=/opt/KUIN000601/etcd-client.key snapshot save /etc/data/etcd-snapshot.db
#restore
ETCDCTL_API=3 etcdctl --endpoints="https://127.0.0.1:2379" --cacert=/opt/KUIN000601/ca.crt --cert=/opt/KUIN000601/etcd-client.crt --key=/opt/KUIN000601/etcd-client.key snapshot restore /var/lib/backup/etcd-snapshot-previoys.db
NEW QUESTION 50
Deployment
a. Create a deployment of webapp with image nginx:1.17.1 with
container port 80 and verify the image version
- A. // Create initial YAML file with -dry-run option
kubectl create deploy webapp --image=nginx:1.17.1 --dryrun=client -o yaml > webapp.yaml vim webapp.yaml apiVersion: apps/v1 kind: Deployment metadata:
labels:
app: webapp
name: webapp
spec: replicas: 1 selector: matchLabels: app: webapp template: metadata: labels: app: webapp spec: containers: - image: nginx:1.17.1 name: nginx kubectl create -f webapp.yaml -record=true //Verify Image Version kubectl describe deploy webapp | grep -i "Image" Using JsonPath kubectl get deploy -o=jsonpath='{range.items [*]}{.[*]} {.metadata.name}{"\t"}{.spec.template.spec.containers[*].i mage}{"\n"}' - B. // Create initial YAML file with -dry-run option
kubectl create deploy webapp --image=nginx:1.17.1 --dryrun=client -o yaml > webapp.yaml vim webapp.yaml apiVersion: apps/v1 kind: Deployment metadata:
labels:
app: webapp
name: webapp
spec: replicas: 1 containers: - image: nginx:1.17.1 name: nginx kubectl create -f webapp.yaml -record=true //Verify Image Version kubectl describe deploy webapp | grep -i "Image" Using JsonPath kubectl get deploy -o=jsonpath='{range.items [*]}{.[*]} {.metadata.name}{"\t"}{.spec.template.spec.containers[*].i mage}{"\n"}'
Answer: A
NEW QUESTION 51
List all the events sorted by timestamp and put them into file.log and verify
- A. kubectl get events --sort-by=.metadata.creationTimestamp
// putting them into file.log
kubectl get events --sort-by=.metadata.creationTimestamp >
test-file.log
cat test-file.log - B. kubectl get events --sort-by=.metadata.creationTimestamp
// putting them into file.log
kubectl get events --sort-by=.metadata.creationTimestamp >
cat test-file.log - C. kubectl get events --sort-by=.metadata.creationTimestamp
kubectl get events --sort-by=.metadata.creationTimestamp >
test-file.log
cat test-file.log
Answer: A
NEW QUESTION 52
Create a job named "hello-job" with the image busybox which echos "Hello I'm running job"
- A. kubectl create job hello-job --image=busybox --dry-run -o yaml
-- echo "Hello I'm running job" > hello-job.yaml
kubectl create -f hello-job.yaml
//Verify Job
kubectl get job
kubectl get po
kubectl logs hello-job-* - B. kubectl create job hello-job --image=busybox --dry-run -o yaml
-- echo "Hello I'm running job" > hello-job.yaml
kubectl create -f hello-job.yaml
//Verify Job
kubectl get po
kubectl logs hello-job-*
Answer: A
NEW QUESTION 53
What file type upload is supported as part of the basic WildFire service?
- A. VBS
- B. ELF
- C. BAT
- D. PE
Answer: D
NEW QUESTION 54
Scale the deployment webserver to
Answer:
Explanation:
See the solution below.
Explanation
solution
NEW QUESTION 55
Score: 4%
Task
Set the node named ek8s-node-1 as unavailable and reschedule all the pods running on it.
Answer:
Explanation:
SOLUTION:
[student@node-1] > ssh ek8s
kubectl cordon ek8s-node-1
kubectl drain ek8s-node-1 --delete-local-data --ignore-daemonsets --force
NEW QUESTION 56
......
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