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Secure Kubernetes Services UPDATED Actual Exam Questions and CORRECT Answers
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Secure Kubernetes Services UPDATED Actual Exam Questions and CORRECT Answers A client asked for help with controlling the access mechanism to a set of IKS clusters across different environments. Besides controlling access via IBM Cloud IAM permissions to the IKS clusters, what other securi...

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  • September 26, 2024
  • 9
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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Secure Kubernetes Services UPDATED
Actual Exam Questions and CORRECT
Answers
A client asked for help with controlling the access mechanism to a set of IKS clusters across
different environments. Besides controlling access via IBM Cloud IAM permissions to the
IKS clusters, what other security configuration could be implemented to limit the risk of
unauthorized access? - CORRECT ANSWER- ✔✔Create an allowlist for the IKS API server.


What is the minimum permission required for a developer who wants to integrate the
application's CD pipeline to the IKS cluster? - CORRECT ANSWER- ✔✔Create a service
account and role binding for the namespace.


What pod security policy should be assigned so that the team has only the required level of
access and nothing extra when the application deployment team needs to deploy pods on the
IBM Cloud Kubernetes service that can create host path volumes and can run with any user
ID and group ID? - CORRECT ANSWER- ✔✔ibm-anyuid-hostpath-psp-user


How can it be verified if a resource configuration of a new IKS cluster is following security
best practices? - CORRECT ANSWER- ✔✔Integrate the IKS cluster with the Security and
Compliance Center.


How do you isolate IKS clusters deployed on a public network? - CORRECT ANSWER-
✔✔Apply Calico public network policies on top of the default policies.


A production IKS cluster in a VPC has three worker nodes without any public exposure. The
IKS cluster needs to access the IBM Cloud Container registry. Describe how this security
control can be implemented. - CORRECT ANSWER- ✔✔Apply the Calico private network
policies to allow private services.


Describe how the Calico network policy blocks traffic at the Kubernetes interfaces. -
CORRECT ANSWER- ✔✔Using Linux iptables


A client is running a firewall at their site and recently chose IKS in IBM Cloud but is unable
to access their IKS cluster. List the correct sequence of commands to get the service endpoint

, and port number to add into the firewall in order to allow access. - CORRECT ANSWER-
✔✔(1) ibmcloud login [--sso] (2) ibmcloud target -g <resource-group> (3) ibmcloud ks
cluster get --cluster <cluster name or id> (4) curl --insecure <endpoint>/version


Describe the significance of creating an allowlist for the private cloud service endpoint in a
multizone VPC Red Hat OpenShift cluster on IBM Cloud. - CORRECT ANSWER- ✔✔Only
authorized requests to the cluster masters that originate from subnets


What is the minimum IBM Cloud IAM platform access required for a new SRE who is
responsible for updating, adding/replacing worker nodes, and troubleshooting/reloading
worker nodes of Red Hat OpenShift on the IBM Cloud cluster? - CORRECT ANSWER-
✔✔Operator role


What security policy is applied to VPC subnets that control traffic to and from a VPC cluster
in Red Hat OpenShift on IBM Cloud? - CORRECT ANSWER- ✔✔Access Control Lists


What network security option on the worker node endpoint controls traffic to and from a VPC
cluster on Red Hat OpenShift on IBM Cloud? - CORRECT ANSWER- ✔✔Kubernetes
network policies


Worker-to-Worker node communication on Red Hat OpenShift on IBM Cloud requires UDP,
TCP, VRRP, and IPEncap traffic to be allowed. Describe what is needed to allow pod-to-pod
traffic across subnets. - CORRECT ANSWER- ✔✔IPEncap


For Red Hat OpenShift on IBM Cloud Classic Infrastructure, which software-defined
network can be used to act as a cluster firewall? - CORRECT ANSWER- ✔✔Calico


What two endpoints allow clients running the IBM Cloud Satellite location to connect to a
service, server, or application that runs outside the location, or allows clients connected to the
IBM Cloud private network connect to a service, server, or application in the IBM Cloud
Satellite location? - CORRECT ANSWER- ✔✔Cloud endpoint / Location endpoint


By default, __________ is how data is transported over an IBM Cloud Satellite link secured
between source and destination resources. - CORRECT ANSWER- ✔✔Using TLS 1.3
encryption managed by IBM

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