Free Linux Foundation KCSA Exam Questions

Question 1

Given a standard Kubernetes cluster architecture comprising a single control plane node (hosting both etcd and the control plane as Pods) and three worker nodes, which of the following data flows crosses a trust boundary?

A : From kubelet to Container Runtime

B : From kubelet to API Server

C : From kubelet to Controller Manager

D : From API Server to Container Runtime

Answer: B

Question 2

Given a standard Kubernetes cluster architecture comprising a single control plane node (hosting both etcd and the control plane as Pods) and three worker nodes, which of the following data flows crosses a trust boundary?

A : From kubelet to Container Runtime

B : From kubelet to API Server

C : From kubelet to Controller Manager

D : From API Server to Container Runtime

Answer: B

Question 3

What does the 'cluster-admin' ClusterRole enable when used in a RoleBinding?

A : It gives full control over every resource in the role binding's namespace, not including the namespace object for isolation purposes.

B : It gives full control over every resource in the cluster and in all namespaces.

C : It gives full control over every resource in the role binding's namespace, including the namespace itself.

D : It allows read/write access to most resources in the role binding's namespace. This role does not allow write access to resource quota, to the namespace itself, and to EndpointSlices (or Endpoints).

Answer: B

Question 4

Why is setting resource limits and requests for Kubernetes pods important to prevent internal Denial of Service scenarios?

A : To optimize the network performance of the cluster

B : To ensure even distribution of storage resources among pods

C : To prevent a single pod from consuming excessive resources, impacting overall cluster stability

D : To facilitate rapid scaling of applications in response to demand

Answer: C

Question 5

What is the role of a Certificate Authority (CA) in the PKI setup of a Kubernetes cluster?

A : To provide load balancing between different Kubernetes services

B : To manage the distribution of secrets within the Kubernetes cluster

C : To issue and manage digital certificates for secure communication within the cluster

D : To optimize network traffic routing within the Kubernetes environment

Answer: C