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[General] CKS Exam Labs & CKS Valid Torrent

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【General】 CKS Exam Labs & CKS Valid Torrent

Posted at 12 hour before      View：8 | Replies：0        Print      Only Author   [Copy Link] 1#
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The Linux Foundation CKS Exam covers various aspects of Kubernetes security, including access control, network security, cluster hardening, authentication and authorization, and monitoring and logging. Candidates are required to demonstrate their knowledge of these topics through a series of practical, scenario-based questions that test their ability to analyze and solve security problems in real-world situations.
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Linux Foundation Certified Kubernetes Security Specialist (CKS) Sample Questions (Q50-Q55):NEW QUESTION # 50
Secrets stored in the etcd is not secure at rest, you can use the etcdctl command utility to find the secret value for e.g:- ETCDCTL_API=3 etcdctl get /registry/secrets/default/cks-secret --cacert="ca.crt" --cert="server.crt" --key="server.key" Output

Using the Encryption Configuration, Create the manifest, which secures the resource secrets using the provider AES-CBC and identity, to encrypt the secret-data at rest and ensure all secrets are encrypted with the new configuration.
Answer:
Explanation:
ETCD secret encryption can be verified with the help of etcdctl command line utility.
ETCD secrets are stored at the path /registry/secrets/$namespace/$secret on the master node.
The below command can be used to verify if the particular ETCD secret is encrypted or not.
# ETCDCTL_API=3 etcdctl get /registry/secrets/default/secret1 [...] | hexdump -C

NEW QUESTION # 51
Context
The kubeadm-created cluster's Kubernetes API server was, for testing purposes, temporarily configured to allow unauthenticated and unauthorized access granting the anonymous user duster-admin access.
Task
Reconfigure the cluster's Kubernetes API server to ensure that only authenticated and authorized REST requests are allowed.
Use authorization mode Node,RBAC and admission controller NodeRestriction.
Cleaning up, remove the ClusterRoleBinding for user system:anonymous.


Answer:
Explanation:






NEW QUESTION # 52
You can switch the cluster/configuration context using the following command:
[desk@cli] $ kubectl config use-context stage
Context:
A PodSecurityPolicy shall prevent the creation of privileged Pods in a specific namespace.
Task:
1. Create a new PodSecurityPolcy named deny-policy, which prevents the creation of privileged Pods.
2. Create a new ClusterRole name deny-access-role, which uses the newly created PodSecurityPolicy deny-policy.
3. Create a new ServiceAccount named psd-denial-sa in the existing namespace development.
Finally, create a new ClusterRoleBindind named restrict-access-bind, which binds the newly created ClusterRole deny-access-role to the newly created ServiceAccount psp-denial-sa
Answer:
Explanation:
Create psp to disallow privileged container
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
name: deny-access-role
rules:
- apiGroups: ['policy']
resources: ['podsecuritypolicies']
verbs: ['use']
resourceNames:
- "deny-policy"
k create sa psp-denial-sa -n development
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: restrict-access-bing
roleRef:
kind: ClusterRole
name: deny-access-role
apiGroup: rbac.authorization.k8s.io
subjects:
- kind: ServiceAccount
name: psp-denial-sa
namespace: development
Explanation
master1 $ vim psp.yaml
apiVersion: policy/v1beta1
kind: PodSecurityPolicy
metadata:
name: deny-policy
spec:
privileged: false # Don't allow privileged pods!
seLinux:
rule: RunAsAny
supplementalGroups:
rule: RunAsAny
runAsUser:
rule: RunAsAny
fsGroup:
rule: RunAsAny
volumes:
- '*'
master1 $ vim cr1.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
name: deny-access-role
rules:
- apiGroups: ['policy']
resources: ['podsecuritypolicies']
verbs: ['use']
resourceNames:
- "deny-policy"
master1 $ k create sa psp-denial-sa -n development
master1 $ vim cb1.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: restrict-access-bing
roleRef:
kind: ClusterRole
name: deny-access-role
apiGroup: rbac.authorization.k8s.io
subjects:
# Authorize specific service accounts:
- kind: ServiceAccount
name: psp-denial-sa
namespace: development
master1 $ k apply -f psp.yaml master1 $ k apply -f cr1.yaml master1 $ k apply -f cb1.yaml  Reference: https://kubernetes.io/docs/concepts/policy/pod-security-policy/ master1 $ k apply -f cr1.yaml master1 $ k apply -f cb1.yaml master1 $ k apply -f psp.yaml master1 $ k apply -f cr1.yaml master1 $ k apply -f cb1.yaml  Reference: https://kubernetes.io/docs/concepts/policy/pod-security-policy/

NEW QUESTION # 53
You have a Kubernetes cluster running on a public cloud provider. You're deploying a microservice application that handles sensitive user data To enhance security, you need to implement Pod-to-Pod encryption using Cilium. This encryption should be applied to all communication between pods within your application's namespace. How would you configure Cilium to achieve this, while also ensuring that you can still access the application from outside the cluster through a dedicated Ingress service?
Answer:
Explanation:
Solution (Step by Step) :
1. Install Cilium:
- Install Cilium on your Kubernetes cluster using the official installation guide: [httpsi//docs.Cilium.i0/ennatest/gettingstaned/install]
(https:Ildocs.cilium.io/en/latest/gettingsta ned/install).
- Choose the installation method compatible with your cluster.
2. Enable Encryption:
- Modify the Cilium configuration to enable encryption. In your cluster's configuration file (e.g., 'cilium-config.yaml'), add or modify the following settings:

- Apply the configuration changes: 'kubectl apply -f cilium-config_yamr 3. Create Network Policy tor Encryption: - Define a NetworkPolicy that allows only encrypted communication within your application's namespace:

- Apply the NetworkPolicy: 'kubectl apply -f pod-to-pod-encryption.yaml' 4. Expose the Application with Ingress: - Create an Ingress service to expose your application outside the cluster.

- Apply the Ingress: 'kubectl apply -f your-application-ingress-yaml' 5. Verify Configuration: - Check the status of Cilium pods and ensure they are running and ready_ - Use 'kubectl get pods -n kube-system' and 'kubectl get pods -n your-application-namespace' to monitor the status. 6. Test Communication: - Test communication between pods within your application's namespace to verify encrypted traffic. - Test accessing your application from outside the cluster using the Ingress URL. 7. (Optional) Monitor Encryptiom - Enable Cilium logging and monitoring to view encryption details, such as handshake success/failure rates, and troubleshoot any issues. Note: - This configuration assumes that your pods are running on nodes with Cilium installed. - Ensure that your public cloud provider supports the necessary firewall settings for encrypted traffic. - You can adjust the NetworkPolicy rules based on your specific application needs.

NEW QUESTION # 54
Create a new ServiceAccount named backend-sa in the existing namespace default, which has the capability to list the pods inside the namespace default.
Create a new Pod named backend-pod in the namespace default, mount the newly created sa backend-sa to the pod, and Verify that the pod is able to list pods.
Ensure that the Pod is running.
Answer:
Explanation:
A service account provides an identity for processes that run in a Pod.
When you (a human) access the cluster (for example, using kubectl), you are authenticated by the apiserver as a particular User Account (currently this is usually admin, unless your cluster administrator has customized your cluster). Processes in containers inside pods can also contact the apiserver. When they do, they are authenticated as a particular Service Account (for example, default).
When you create a pod, if you do not specify a service account, it is automatically assigned the default service account in the same namespace. If you get the raw json or yaml for a pod you have created (for example, kubectl get pods/<podname> -o yaml), you can see the spec.serviceAccountName field has been automatically set.
You can access the API from inside a pod using automatically mounted service account credentials, as described in Accessing the Cluster. The API permissions of the service account depend on the authorization plugin and policy in use.
In version 1.6+, you can opt out of automounting API credentials for a service account by setting automountServiceAccountToken: false on the service account:
apiVersion: v1
kind: ServiceAccount
metadata:
name: build-robot
automountServiceAccountToken: false
...
In version 1.6+, you can also opt out of automounting API credentials for a particular pod:
apiVersion: v1
kind: Pod
metadata:
name: my-pod
spec:
serviceAccountName: build-robot
automountServiceAccountToken: false
...
The pod spec takes precedence over the service account if both specify a automountServiceAccountToken value.

NEW QUESTION # 55
......
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