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Linux Foundation CKA Exam Syllabus Topics:

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

>> CKA受験内容 <<

CKA模擬資料、CKAリンクグローバル

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Linux Foundation Certified Kubernetes Administrator (CKA) Program Exam 認定 CKA 試験問題 (Q22-Q27):

質問 # 22
Score: 7%

Task
Create a new NetworkPolicy named allow-port-from-namespace in the existing namespace echo. Ensure that the new NetworkPolicy allows Pods in namespace my-app to connect to port 9000 of Pods in namespace echo.
Further ensure that the new NetworkPolicy:
* does not allow access to Pods, which don't listen on port 9000
* does not allow access from Pods, which are not in namespace my-app

正解：

解説：
Solution:
#network.yaml
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: allow-port-from-namespace
namespace: internal
spec:
podSelector:
matchLabels: {
}
policyTypes:
- Ingress
ingress:
- from:
- podSelector: {
}
ports:
- protocol: TCP
port: 8080
#spec.podSelector namespace pod
kubectl create -f network.yaml

質問 # 23
An administrator accidentally closed the commit window/screen before the commit was finished. Which two options could the administrator use to verify the progress or success of that commit task? (Choose two)

A. Traffic Logs
B. Task Manager
C. System Logs
D. Configuration Logs

正解：B、D

質問 # 24
List all the pods showing name and namespace with a json path expression

正解：

解説：
kubectl get pods -o=jsonpath="{.items[*]['metadata.name',
'metadata.namespace']}"

質問 # 25
Create a redis pod, and have it use a non-persistent storage
Note: In exam, you will have access to kubernetes.io site,
Refer : https://kubernetes.io/docs/tasks/configure-pod-container/configurevolume-storage/

A. apiVersion: v1
kind: Pod
metadata:
name: redis
spec:
containers:
- name: redis
image: redis
volumeMounts:
- containerPort: 6379
volumes:
- name: redis-storage
emptyDir: {}
B. apiVersion: v1
kind: Pod
metadata:
name: redis
spec:
containers:
- name: redis
image: redis
volumeMounts:
- name: redis-storage
mountPath: /data/redis
ports:
- containerPort: 6379
volumes:
- name: redis-storage
emptyDir: {}

正解：B

質問 # 26
Check the history of the specific revision of that deployment

正解：

解説：
kubectl rollout history deploy webapp --revision=3

質問 # 27
......

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