CKA Cluster Architecture 3

Question 1

Which etcd configuration parameter controls how long a follower waits before triggering a leader election?

Accepted Answer

--election-timeout

Answer

The --election-timeout parameter defines how long an etcd follower waits without hearing from the leader before starting a new election.

Question 2

In a high-availability control plane setup, what is the recommended minimum number of etcd members?

Accepted Answer

3

Answer

A 3-member etcd cluster can tolerate the failure of 1 member while maintaining quorum (majority = 2 of 3).

Question 3

What is the role of a cloud-controller-manager in a Kubernetes cluster?

Accepted Answer

Integrates Kubernetes with cloud provider APIs for nodes, routes, and load balancers

Answer

The cloud-controller-manager runs cloud-specific control loops for node lifecycle, route configuration, and service load balancer provisioning.

Question 4

Which flag on the kube-apiserver controls the list of admission controllers that are enabled?

Accepted Answer

--enable-admission-plugins

Answer

The --enable-admission-plugins flag on the kube-apiserver specifies which admission controllers are active in the admission chain.

Question 5

A static Pod manifest is placed in /etc/kubernetes/manifests/. Which component is responsible for starting that Pod?

Accepted Answer

kubelet

Answer

The kubelet watches its static Pod manifest directory and directly creates/manages Pods defined there without going through the scheduler.

(CKA) Certified Kubernetes Associate Practice Test