Linux Foundation Kubernetes Application Developer CKAD Questions & Answers

• Question 11:

  CORRECT TEXT

  

  

  Task:

  Update the Deployment app-1 in the frontend namespace to use the existing ServiceAccount app.

  A. Please check explanations

  B. Place Holder

  Correct Answer: A

  

• Question 12:

  CORRECT TEXT

  

  Task:

  The pod for the Deployment named nosql in the crayfish namespace fails to start because its container runs out of resources.

  Update the nosql Deployment so that the Pod:

  

  A. Please check explanations

  B. Place Holder

  Correct Answer: A

  

  

• Question 13:

  CORRECT TEXT

  

  Task:

  A Dockerfile has been prepared at -/human-stork/build/Dockerfile

  

  A. Please check explanations

  B. Place Holder

  Correct Answer: A

  

• Question 14:

  CORRECT TEXT

  

  Context

  As a Kubernetes application developer you will often find yourself needing to update a running application.

  Task

  Please complete the following:

  1.

  Update the app deployment in the kdpd00202 namespace with a maxSurge of 5% and a maxUnavailable of 2%

  2.

  Perform a rolling update of the web1 deployment, changing the Ifccncf/ngmx image version to 1.13

  3.

  Roll back the app deployment to the previous version

  A. Please check explanations

  B. Place Holder

  Correct Answer: A

  

  

• Question 15:

  CORRECT TEXT

  

  Context

  You are asked to prepare a Canary deployment for testing a new application release.

  Task:

  A Service named krill-Service in the goshark namespace points to 5 pod created by the Deployment named current-krill-deployment

  

  A. Please check explanations

  B. Place Holder

  Correct Answer: A

  

  

• Question 16:

  CORRECT TEXT

  

  Task

  You have rolled out a new pod to your infrastructure and now you need to allow it to communicate with the web and storage pods but nothing else. Given the running pod kdsn00201 -newpod edit it to use a network policy that will allow it to send and receive traffic only to and from the web and storage pods.

  

  A. Please check explanations

  B. Place Holder

  Correct Answer: A

  apiVersion: networking.k8s.io/v1

  kind: NetworkPolicy

  metadata:

  name: internal-policy

  namespace: default

  spec:

  podSelector:

  matchLabels:

  name: internal

  policyTypes:

  -Egress

  -Ingress ingress:

  -{} egress:

  -to:

  -podSelector: matchLabels:

  name: mysql ports:

  -protocol: TCP port: 3306

  -to:

  -podSelector: matchLabels: name: payroll ports:

  -protocol: TCP port: 8080

  -ports:

  -

  port: 53 protocol: UDP

  -

  port: 53 protocol: TCP

• Question 17:

  CORRECT TEXT

  

  Task:

  Update the Pod ckad00018-newpod in the ckad00018 namespace to use a NetworkPolicy allowing the Pod to send and receive traffic only to and from the pods web and db

  

  A. Please check explanations

  B. Place Holder

  Correct Answer: A

  

  

• Question 18:

  CORRECT TEXT

  

  Task:

  

  A. Please check explanations

  B. Place Holder

  Correct Answer: A

  

  

• Question 19:

  CORRECT TEXT

  

  Context

  A container within the poller pod is hard-coded to connect the nginxsvc service on port 90 . As this port changes to 5050 an additional container needs to be added to the poller pod which adapts the container to connect to this new port. This should be realized as an ambassador container within the pod.

  Task

  Update the nginxsvc service to serve on port 5050. Add an HAproxy container named haproxy bound to port 90 to the poller pod and deploy the enhanced pod. Use the image haproxy and inject the configuration located at /opt/KDMC00101/haproxy.cfg, with a ConfigMap named haproxyconfig, mounted into the container so that haproxy.cfg is available at /usr/local/etc/haproxy/haproxy.cfg. Ensure that you update the args of the poller container to connect to localhost instead of nginxsvc so that the connection is correctly proxied to the new service endpoint. You must not modify the port of the endpoint in poller's args . The spec file used to create the initial poller pod is available in /opt/KDMC00101/poller.yaml

  A. Please check explanations

  B. Place Holder

  Correct Answer: A

  apiVersion: apps/v1

  kind: Deployment

  metadata:

  name: my-nginx

  spec:

  selector:

  matchLabels:

  run: my-nginx

  replicas: 2

  template:

  metadata:

  labels:

  run: my-nginx

  spec:

  containers:

  -name: my-nginx image: nginx ports:

  -containerPort: 90 This makes it accessible from any node in your cluster. Check the nodes the Pod is running on: kubectl apply -f ./run-my-nginx.yaml kubectl get pods -l run=my-nginx -o wide NAME READY STATUS RESTARTS AGE IP NODE my-nginx-3800858182-jr4a2 1/1 Running 0 13s 10.244.3.4 kubernetes-minion-905m my-nginx-3800858182-kna2y 1/1 Running 0 13s 10.244.2.5 kubernetes-minion-ljyd Check your pods' IPs: kubectl get pods -l run=my-nginx -o yaml | grep podIP podIP: 10.244.3.4 podIP: 10.244.2.5

• Question 20:

  CORRECT TEXT

  

  Task

  A deployment is falling on the cluster due to an incorrect image being specified. Locate the deployment, and fix the problem.

  A. Please check explanations

  B. Place Holder

  Correct Answer: A

  create deploy hello-deploy --image=nginx --dry-run=client -o yaml > hello-deploy.yaml Update deployment image to nginx:1.17.4: kubectl set image deploy/hello-deploy nginx=nginx:1.17.4