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[General] CKS Valid Vce, CKS PDF VCE

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【General】 CKS Valid Vce, CKS PDF VCE

Posted at 7 day before      View：58 | Replies：1        Print      Only Author   [Copy Link] 1#
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Linux Foundation CKS PDF VCE & Reliable CKS Exam TestThe Linux Foundation CKS certification topics or syllabus are updated with the passage of time. To pass the Linux Foundation Certified Kubernetes Security Specialist (CKS) exam you have to know these topics. The Exam-Killer CKS certification exam trainers always work on these topics and add their appropriate Linux Foundation CKS Exam Questions And Answers in the CKS exam dumps. These latest Linux Foundation Certified Kubernetes Security Specialist (CKS) exam topics are added in all Linux Foundation Certified Kubernetes Security Specialist (CKS) exam questions formats.
Linux Foundation Certified Kubernetes Security Specialist (CKS) Sample Questions (Q20-Q25):NEW QUESTION # 20
You are deploying a new microservice to your Kubernetes cluster. This microservice will handle sensitive user data and requires access to a database that is also deployed on the cluster. To ensure secure communication between the microservice and the database, you need to configure mutual TLS authentication.
Explain the steps involved in setting up mutual TLS authentication between the microservice and the database.
Answer:
Explanation:
Solution (Step by Step) :
1. Generate Certificates:
- Create a Certificate Authority (CA) to issue certificates for the microservice and the database.
- Generate a self-signed certificate and key for the CA.
- Example (using OpenSSL):
bash
openssl genrsa -out cakey 2048
openssl req -new -x509 -key ca.key -out ca.crt -days 365 -subj Francisco/O=My Company/OU=lT Department/CN=myCA"
2. Generate Certificates for the Microservice and Database:
- Use the CA certificate and key to sign certificates for tne microservice and the database.
- Example (using OpenSSL):
bash
# Generate a certificate request for the microservice
openssl req -new -key microservice-key -out microservice-csr -subj "/C=US/ST=California/L=San Francisco,'O=My Company/OU=lT
Department/CN=microservice"
# Sign the certificate request with the CA
openssl x509 -req -in microservice.csr -CA ca.crt -CAkey ca.key -out microservice-crt -days 365
# Repeat for the database
3. Create Kubernetes Secrets:
- Create secrets in the cluster to store the certificates and keys for the microservice and database.
- Example:

4. Configure the Microservice Container: - Update tne microservice deployment YAML to mount the certificate and key secret. - Set the 'TLS parameters in the database connection string. - Example:

5. Configure the Database Container: - Repeat the steps for the database container, using the database certificate and key. 6. Verify Communication: - Ensure that the microservice can connect to the database securely using mutual TLS authentication. - Test the application to ensure that it functions correctly. These are just a few examples of how to create and utilize custom base images, network policies, RBAC, and mutual TLS- Implementing robust security in Kubernetes is an ongoing effort that requires continuous monitoring and updates to mitigate potential threats.

NEW QUESTION # 21
Create a Pod name Nginx-pod inside the namespace testing, Create a service for the Nginx-pod named nginx-svc, using the ingress of your choice, run the ingress on tls, secure port.
  • A. Send us your Feedback on this.
Answer: A

NEW QUESTION # 22
SIMULATION
Enable audit logs in the cluster, To Do so, enable the log backend, and ensure that
1. logs are stored at /var/log/kubernetes-logs.txt.
2. Log files are retained for 12 days.
3. at maximum, a number of 8 old audit logs files are retained.
4. set the maximum size before getting rotated to 200MB
Edit and extend the basic policy to log:
1. namespaces changes at RequestResponse
2. Log the request body of secrets changes in the namespace kube-system.
3. Log all other resources in core and extensions at the Request level.
4. Log "pods/portforward", "services/proxy" at Metadata level.
5. Omit the Stage RequestReceived
All other requests at the Metadata level
Answer:
Explanation:
Kubernetes auditing provides a security-relevant chronological set of records about a cluster. Kube-apiserver performs auditing. Each request on each stage of its execution generates an event, which is then pre-processed according to a certain policy and written to a backend. The policy determines what's recorded and the backends persist the records.
You might want to configure the audit log as part of compliance with the CIS (Center for Internet Security) Kubernetes Benchmark controls.
The audit log can be enabled by default using the following configuration in cluster.yml:
services:
kube-api:
audit_log:
enabled: true
When the audit log is enabled, you should be able to see the default values at /etc/kubernetes/audit-policy.yaml The log backend writes audit events to a file in JSONlines format. You can configure the log audit backend using the following kube-apiserver flags:
--audit-log-path specifies the log file path that log backend uses to write audit events. Not specifying this flag disables log backend. - means standard out
--audit-log-maxage defined the maximum number of days to retain old audit log files
--audit-log-maxbackup defines the maximum number of audit log files to retain
--audit-log-maxsize defines the maximum size in megabytes of the audit log file before it gets rotated If your cluster's control plane runs the kube-apiserver as a Pod, remember to mount the hostPath to the location of the policy file and log file, so that audit records are persisted. For example:
--audit-policy-file=/etc/kubernetes/audit-policy.yaml
--audit-log-path=/var/log/audit.log

NEW QUESTION # 23
You are running a Kubernetes cluster with a deployment named "my-app" that uses a container image from a public registry. The container image has a vulnerability in a library it uses. You want to apply a security patch to the container image without rebuilding it. Explain how you would implement this using a container patching tool like 'image-patcners and update the deployment.
Answer:
Explanation:
Solution (Step by Step) :
1. Install 'image-patchers:
- Install the 'image-patcher' tool on your system or within your Kubernetes cluster. 'image-patcher' is a tool for patching container images without rebuilding thenm It allows you to modify the container image's filesystem and update libraries directly.
2. Identify the Vulnerable Library:
- Use a vulnerability scanner like Trivy to identify the specific vulnerable library within the container image.
3. Patch the Vulnerable Library:
- Use 'image-patcher' to apply the security patch to the vulnerable library within the container image.
- You can use the 'image-patcher apply' command with the patch file and tne container image name to apply the patch.
4. Create a Patched Image:
- 'image-patcher' Will generate a new, patched container image. This patched image will contain the updated library with the security fix applied.
5. Push the Patched Image to a Registry:
- Push the patched image to your private container registry for use in deployments.
6. Update the Deployment
- Update the "my-app" deployment configuration to use the newly created patched image from your private registry.
7. Validate the Patch:
- After updating the deployment, verify that the patch has been successfully applied by running a vulnerability scan on the running container.

NEW QUESTION # 24
SIMULATION
Create a RuntimeClass named untrusted using the prepared runtime handler named runsc.
Create a Pods of image alpine:3.13.2 in the Namespace default to run on the gVisor runtime class.
Verify: Exec the pods and run the dmesg, you will see output like this:-

  • A. Send us your feedback on it.
Answer: A

NEW QUESTION # 25
......
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Posted at before yesterday 11:08        Only Author  2#
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