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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Services & Networking | 20% | - Use the Gateway API to manage Ingress traffic - Understand and use CoreDNS - Define and enforce Network Policies - Understand connectivity between Pods - Know how to use Ingress controllers and Ingress resources - Use ClusterIP, NodePort, LoadBalancer service types and endpoints |
| Topic 2: Troubleshooting | 30% | - Troubleshoot cluster component failure - Understand how to monitor applications - Evaluate cluster and node logging - Troubleshoot application failure - Manage container stdout & stderr logs - Troubleshoot networking |
| Topic 3: Storage | 10% | - Understand Storage Classes and Persistent Volumes - Understand how to configure applications with persistent storage - Understand persistent volume claims primitive - Understand volume mode, access modes and reclaim policies |
| Topic 4: Cluster Architecture, Installation & Configuration | 25% | - Use Helm and Kustomize to install cluster components - Understand extension interfaces (CNI, CSI, CRI, etc.) - Prepare underlying infrastructure for installing a Kubernetes cluster - Manage the lifecycle of Kubernetes clusters - Manage role based access control (RBAC) - Implement and configure a highly-available control plane - Create and manage Kubernetes clusters using kubeadm - Understand CRDs, install and configure operators |
| Topic 5: Workloads & Scheduling | 15% | - Use ConfigMaps and Secrets to configure applications - Understand DaemonSets - Understand how to run multiple schedulers and configure scheduler policies - Understand how scheduler works - Understand resource limits and requests - Understand Static Pods - Understand Deployments and rolling update/rollback - Use label selectors to schedule Pods |
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NEW QUESTION # 38
On the NGFW, how can you generate and block a private key from export and thus harden your security posture and prevent rogue administrators or other bad actors from misusing keys?
Answer: A
NEW QUESTION # 39
Score: 4%
Task
Schedule a pod as follows:
* Name: nginx-kusc00401
* Image: nginx
* Node selector: disk=ssd
Answer:
Explanation:
See the solution below.
Explanation
Solution:
#yaml
apiVersion: v1
kind: Pod
metadata:
name: nginx-kusc00401
spec:
containers:
- name: nginx
image: nginx
imagePullPolicy: IfNotPresent
nodeSelector:
disk: spinning
#
kubectl create -f node-select.yaml
NEW QUESTION # 40
You have a complex application with multiple services running in a Kubernetes cluster. Some services communicate with each other over the cluster network, while others need to access external services over the internet. You need to configure CoreDNS to handle both internal and external DNS resolution in a secure and efficient manner.
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Configure CoreDNS for Internal DNS:
- Create a CoreDNS ConfigMap named 'coredns' with the following configuration:
-
2. Configure CoreDNS for External DNS: - If you need to resolve external domains, you can use CoreDNS's 'forward' plugin to forward requests to external DNS servers. You can configure 'forward' in the Corefile, or use environment variables to dynamically set the upstream servers.
3. Configure Services with External Names: - If you need to access external services, configure their services in Kubernetes with the 'externalName' field.
4. Use Secure DNS: - Enable DNS over TLS (DOT) or DNS over HTTPS (DOH) in your CoreDNS configuration to ensure secure DNS resolution.
5. Test DNS Resolution: - Test DNS resolution for internal and external domains using the 'nslookup command from pods in your cluster.
NEW QUESTION # 41
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:
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 # 42
List all configmap and secrets in the cluster in all namespace and write it to a file /opt/configmap-secret
Answer:
Explanation:
kubectl get configmap,secrets --all-namespaces > /opt/configmap-secret // Verify Cat /opt/configmap-secret
NEW QUESTION # 43
......
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