You create a NodePort service with 'nodePort: 30080'. You want to ensure that external traffic is load-balanced across all nodes. What is the default behavior?

Traffic is only sent to nodes that have a pod running.

Traffic is only sent to the node with the least load.

Traffic is only sent to the node that the client connects to.

Traffic is distributed across all nodes in the cluster.

You have a service named 'db' that selects pods with label 'app=db'. You want to temporarily route traffic to an external database while you migrate. You create an Endpoints object named 'db' with the external IP. However, after a few minutes, the endpoints are overwritten with the pod IPs. What is the most likely reason?

You accidentally deleted the Endpoints object.

The service controller detected the manual endpoints and reverted them.

The external database became unreachable, so the endpoints were removed.

The service's selector was removed automatically.

How is the Endpoints object for a service typically created?

Manually by an administrator using kubectl create endpoints.

Automatically by the service controller based on the service's label selector.

By the kubelet on each node when pods are scheduled.

By the cloud controller manager when a LoadBalancer is created.

How do you access a NodePort service from outside the cluster?

Using the service's DNS name and the nodePort number.

Using the node's IP address and the nodePort number.

Using the pod's IP and the targetPort number.

Using the ClusterIP and the nodePort number.

Certified Kubernetes Administrator (CKA)

Domain 5Objective 3

Use ClusterIP, NodePort, LoadBalancer Service Types and Endpoints CKA Practice Questions (Page 1)

Part of the Servicing and Networking domain, which accounts for 20% of the CKA exam. Linux Foundation does not publish an official question count, but from its 120-minute exam (~50–80 total, ~10–16 in this domain), expect 2–3 from this objective — we provide 23 practice questions to prepare you well beyond it. (estimate)

23questions here

5free pages

7concepts

20%of the exam

Questions 1–5

1application · medium
You create a NodePort service with 'nodePort: 30080'. You want to ensure that external traffic is load-balanced across all nodes. What is the default behavior?
Select an answer first
2expert · medium
You have a service named 'db' that selects pods with label 'app=db'. You want to temporarily route traffic to an external database while you migrate. You create an Endpoints object named 'db' with the external IP. However, after a few minutes, the endpoints are overwritten with the pod IPs. What is the most likely reason?
Select an answer first
3foundation · easy
How is the Endpoints object for a service typically created?
Select an answer first
4foundation · easy
How do you access a NodePort service from outside the cluster?
Select an answer first
5foundation · easy
Which service type should you use to expose an application only to other pods within the same cluster?
Select an answer first

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Use ClusterIP, NodePort, LoadBalancer Service Types and Endpoints CKA Practice Questions (Page 1)

Questions 1–5

You create a NodePort service with 'nodePort: 30080'. You want to ensure that external traffic is load-balanced across all nodes. What is the default behavior?

How is the Endpoints object for a service typically created?

How do you access a NodePort service from outside the cluster?

Which service type should you use to expose an application only to other pods within the same cluster?

Keep studying — Servicing and Networking