1500 Questions | CKA: Certified Kubernetes Administrator

Deployment and free sip analyzing troubleshooting masterclass course (22%): Managing applications via StatefulSets and DaemonSets, pod resource allocation, and resolving node-level crashes.

Networking (18%): Implementing Ingress controllers, ClusterIP/NodePort models, and defining granular Network Policies.

Storage (15%): Configuring Persistent Volumes (PVs), Storage Classes, and handling dynamic provisioning or mounting failures.

Scheduling (15%): Understanding affinity/anti-affinity rules, resource quotas, and troubleshooting pod placement issues.

Cluster Maintenance (8%): Managing cluster upgrades, rollouts, and configuring essential add-ons like DNS and logging.

B. Pod Anti-Affinity

C. Taints and Tolerations

D. Resource Quotas

E. Horizontal Pod Autoscaler

F. Static Pods

Correct Answer: B

Explanation:

A (Incorrect): Node Selector constrains pods to nodes with particular labels but doesn't account for other pods.

C (Incorrect): Taints are applied to nodes to repel pods, whereas affinity/anti-affinity is defined on the pod level.

D (Incorrect): Resource quotas limit the total consumption of resources in a namespace.

E (Incorrect): HPA scales the number of pod replicas based on metrics like CPU usage.

F (Incorrect): Static pods are managed directly by the kubelet on a specific node, bypassing the scheduler.

Question 2: A service of type "NodePort" has been created to expose an application. If the node's IP is 192.168.1.10 and the nodePort is 32000, which address would an external client use to access the service?

B. 10.96.0.1:32000

C. 192.168.1.10:32000

D. localhost:8080

E. 172.17.0.1:443

F. 0.0.0.0:32000

Correct Answer: C

Explanation:

A (Incorrect): Port 80 is the standard HTTP port, not necessarily the assigned NodePort.

B (Incorrect): This resembles a ClusterIP, which is only accessible from within the cluster.

D (Incorrect): Localhost only works if the client is on the same machine and the port is mapped.

E (Incorrect): This is typically a pod-network or internal bridge IP.

F (Incorrect): While 0.0.0.0 represents all interfaces, a client needs the specific reachable IP of the node.

Question 3: During a cluster upgrade, you need to mark a node as unschedulable and move all existing pods to other nodes. Which kubectl command sequence is correct?

B. kubectl delete node [name]

C. kubectl drain [node-name]

D. kubectl taint node [name] effect=NoSchedule

E. kubectl pause node [name]

F. kubectl describe node [name]

Correct Answer: C

Explanation:

A (Incorrect): There is no kubectl stop node command.

B (Incorrect): Deleting the node removes it from the cluster object entirely, which is too destructive for simple maintenance.

D (Incorrect): Tainting with NoSchedule stops new pods but does not move existing ones.

E (Incorrect): There is no pause command for nodes.

F (Incorrect): describe only provides information and performs no action.

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