Kubernetes Container Orchestration Networking Services 2

Question 1

Which Kubernetes Service type exposes an application using the cloud provider's load balancer?

Accepted Answer

LoadBalancer

Answer

LoadBalancer provisions an external load balancer from the cloud provider and assigns a public IP to the Service.

Question 2

What does an ExternalName Service do in Kubernetes?

Accepted Answer

Maps a Service to a DNS name outside the cluster

Answer

ExternalName maps a Service to an external DNS name by returning a CNAME record, enabling in-cluster pods to reach external services by a cluster-internal name.

Question 3

Which field in a Service spec selects the pods that the Service will route traffic to?

Accepted Answer

selector

Answer

The selector field matches pod labels to determine which pods are included as endpoints for the Service.

Question 4

What is the default port range for NodePort Services in Kubernetes?

Accepted Answer

30000–32767

Answer

Kubernetes reserves the range 30000–32767 for NodePort Services by default, configurable via kube-apiserver flags.

Question 5

A headless Service in Kubernetes is created by setting clusterIP to which value?

Accepted Answer

None

Answer

Setting clusterIP: None creates a headless Service where DNS returns individual pod IPs instead of a single virtual IP.

Kubernetes Container Orchestration Practice Test

Kubernetes Container Orchestration Practice Test

Kubernetes Container Orchestration Networking Services 2