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We have three versions for your practice according to your study habit. The pdf version is for you to print the CKS Dump pdf out and you can share your CKS exam dumps with your friends and classmates. The test engine version enables you feeling the atmosphere of formal test because it is a simulation of real test. The soft version is same as the test engine but it allows you to practice your Kubernetes Security Specialist real dumps in any electronic equipment.
| Section | Weight | Objectives |
|---|---|---|
| Cluster Setup | 15% | - Hardening cluster components - Secure installation configuration |
| Supply Chain Security | 20% | - Image scanning and verification - Secure CI/CD practices |
| Monitoring, Logging and Runtime Security | 15% | - Runtime threat detection - Audit logging and monitoring |
| System Hardening | 15% | - Kernel and node security configuration - Host security controls |
| Cluster Hardening | 15% | - API server security - Authentication and authorization |
| Minimizing Microservice Vulnerabilities | 20% | - Container isolation and security contexts - Pod security standards |
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NEW QUESTION # 27
SIMULATION
use the Trivy to scan the following images,
1. amazonlinux:1
2. k8s.gcr.io/kube-controller-manager:v1.18.6
Look for images with HIGH or CRITICAL severity vulnerabilities and store the output of the same in /opt/trivy-vulnerable.txt
Answer:
Explanation:
Send us you rsuggestion on it
NEW QUESTION # 28
Using the runtime detection tool Falco, Analyse the container behavior for at least 20 seconds, using filters that detect newly spawning and executing processes in a single container of Nginx.
store the incident file art /opt/falco-incident.txt, containing the detected incidents. one per line, in the format
[timestamp],[uid],[processName]
Answer: A
NEW QUESTION # 29
You can switch the cluster/configuration context using the following command: [desk@cli] $ kubectl config use-context qa Context: A pod fails to run because of an incorrectly specified ServiceAccount Task: Create a new service account named backend-qa in an existing namespace qa, which must not have access to any secret. Edit the frontend pod yaml to use backend-qa service account Note: You can find the frontend pod yaml at /home/cert_masters/frontend-pod.yaml
Answer:
Explanation:
[desk@cli] $ k create sa backend-qa -n qa sa/backend-qa created [desk@cli] $ k get role,rolebinding -n qa No resources found in qa namespace. [desk@cli] $ k create role backend -n qa --resource pods,namespaces,configmaps --verb list # No access to secret [desk@cli] $ k create rolebinding backend -n qa --role backend --serviceaccount qa:backend-qa [desk@cli] $ vim /home/cert_masters/frontend-pod.yaml apiVersion: v1 kind: Pod metadata:
name: frontend
spec:
serviceAccountName: backend-qa # Add this
image: nginx
name: frontend
[desk@cli] $ k apply -f /home/cert_masters/frontend-pod.yaml pod created
[desk@cli] $ k create sa backend-qa -n qa serviceaccount/backend-qa created [desk@cli] $ k get role,rolebinding -n qa No resources found in qa namespace. [desk@cli] $ k create role backend -n qa --resource pods,namespaces,configmaps --verb list role.rbac.authorization.k8s.io/backend created [desk@cli] $ k create rolebinding backend -n qa --role backend --serviceaccount qa:backend-qa rolebinding.rbac.authorization.k8s.io/backend created [desk@cli] $ vim /home/cert_masters/frontend-pod.yaml apiVersion: v1 kind: Pod metadata:
name: frontend
spec:
serviceAccountName: backend-qa # Add this
image: nginx
name: frontend
[desk@cli] $ k apply -f /home/cert_masters/frontend-pod.yaml pod/frontend created https://kubernetes.io/docs/tasks/configure-pod-container/configure-service-account/
NEW QUESTION # 30
SIMULATION
Context
You must resolve issues that a CIS Benchmark tool found for the kubeadm provisioned cluster.
Task
Fix all issues via configuration and restart the affected components to ensure the new settings take effect.
Fix all of the following violations that were found against the kubelet:
The cluster uses the Docker Engine os its container runtime, If needed, use the docker command to troubleshaot running containers.
Ensure that the anonymous-auth argument is set to false FAIL
Ensure that the -authorization-mode argument is not set to FAIL
AlwaysAllow
Use Webhook authentication /authorization where possible.
Fix all of the following violations that were found against ettd :
Ensure that the -client cert auth argument is set to true FAIL
Answer:
Explanation:
See the Explanation below for complete solution
Explanation:
1) SSH to the right node
ssh cks000002
sudo -i
2) Fix kubelet CIS findings
2.1 Edit kubelet config (MAIN place in kubeadm clusters)
vi /var/lib/kubelet/config.yaml
A) Set anonymous-auth to false
Find (or add) this block exactly:
authentication:
anonymous:
enabled: false
B) Use Webhook authentication (recommended by task)
Ensure this exists under authentication:
webhook:
enabled: true
C) Use Webhook authorization and NOT AlwaysAllow
Find (or add) this block exactly:
authorization:
mode: Webhook
When done, your file should contain something like this (exact structure to aim for):
authentication:
anonymous:
enabled: false
webhook:
enabled: true
x509:
clientCAFile: /etc/kubernetes/pki/ca.crt
authorization:
mode: Webhook
If x509: section isn't there, it's usually already present in kubeadm; don't panic. Only the task-required parts are: anonymous false + webhook enabled + authorization mode Webhook.
2.2 Restart kubelet (required for config.yaml changes)
systemctl daemon-reload
systemctl restart kubelet
systemctl status kubelet --no-pager
Quick confirm (optional but fast):
grep -nE "anonymous|webhook|authorization|mode" /var/lib/kubelet/config.yaml
3) Fix etcd CIS finding: --client-cert-auth=true
3.1 Edit etcd static pod manifest (kubeadm path)
vi /etc/kubernetes/manifests/etcd.yaml
Find the container command: args that look like:
- command:
- etcd
- --something=...
Ensure this line exists exactly in the list:
- --client-cert-auth=true
Also ensure this is present (usually already is, but add if missing):
- --trusted-ca-file=/etc/kubernetes/pki/etcd/ca.crt
Example snippet (what you want the args area to include):
- command:
- etcd
- --client-cert-auth=true
- --trusted-ca-file=/etc/kubernetes/pki/etcd/ca.crt
3.2 Apply etcd change (auto-restart happens)
Just save the file. Kubelet will restart etcd automatically.
Watch it restart (pick one depending on runtime):
If Docker runtime (your task mentions Docker):
docker ps | grep etcd
If you don't see it briefly, wait 2-5 seconds and rerun:
docker ps | grep etcd
(Alternative if available)
crictl ps | grep etcd
4) Final quick validation (fast exam check)
Kubelet config check
grep -n "enabled: false" -n /var/lib/kubelet/config.yaml | head
grep -n "webhook" /var/lib/kubelet/config.yaml
grep -n "authorization" /var/lib/kubelet/config.yaml
etcd arg check
grep -n "client-cert-auth" /etc/kubernetes/manifests/etcd.yaml
NEW QUESTION # 31
You are building a container image for your application that uses a third-party library. Describe the steps involved in scanning the third- party library for vulnerabilities before incorporating it into your image.
Answer:
Explanation:
Solution (Step by Step) :
1. Choose a Vulnerability Scanner:
- Select a vulnerability scanner that supports the language and dependencies of your third-pady library.
- Some popular options include:
- Snyk
- Aqua Security
- Anchore
- Trivy
2. Scan the Third-Party Library:
- Use the chosen vulnerability scanner to scan the third-pany library for known vulnerabilities.
- Provide the scanner with the library's source code, package manager lock file, or other relevant information.
3. Analyze the Scan Results:
- Review the scan results carefully.
- Identify any high-severity vulnerabilities reported by the scanner.
- Determine the impact of each vulnerability on your application's security.
4. Remediate Vulnerabilities:
- If any high-severity vulnerabilities are found, consider the following options:
- Update the Library: Check if a newer version of the library addresses tne vulnerabilities.
- Use a Different Library: If an updated version is not available or the vulnerabilities cannot be mitigated, consider using a different library.
- Apply Patcnes: If the vulnerabilities are in the code itself, apply patcnes to fix them.
- Accept the Risk: If the vulnerabilities are deemed low-risk or the impact is minimal, you may decide to accept the risk
5. Integrate Scanning into CI/CD Pipeline:
- Integrate the vulnerability scanning process into your continuous integration and continuous delivery (CI/CD) pipeline.
- This will ensure that the library is scanned automatically during each build process, providing early detection of vulnerabilities.
6. Example using Snyk:
- Install Snyk:
npm install snyk --global
- Scan the library:
snyk test --package-manager --package-name
- This command will scan the specified library for vulnerabilities.
- Remediate vulnerabilities:
snyk upgrade --package-manager --package-name
- This command will upgrade the library to the latest version that fixes the vulnerabilities.
NEW QUESTION # 32
......
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