What Kubernetes component exposes an application running on Pods as a network service?

What Kubernetes component exposes an application running on Pods as a network service?

• A. Service
• B. Deployment
• C. Ingress
• D. Pod

Answer: (A)

A Kubernetes Service exposes an application running on Pods as a network service. Pods have IPs that can change as they come and go, but a Service provides a stable endpoint (a virtual IP and DNS name) and automatically routes traffic to the pods backing it. It also handles load balancing across those pods. You can choose different ways to expose the service: ClusterIP for internal access within the cluster, NodePort to expose on a port on each node, or LoadBalancer to provision an external load balancer. This decouples clients from individual pod lifecycles and IPs, making the app reliably reachable. The other options don’t fit this exact role: a Deployment manages the lifecycle and scaling of pods, not their network exposure; Ingress handles external HTTP/HTTPS routing rules to services (often behind a Service); a Pod is the smallest unit that runs containers but does not offer a stable, cluster-wide network endpoint or built-in load balancing.

A Kubernetes Service exposes an application running on Pods as a network service. Pods have IPs that can change as they come and go, but a Service provides a stable endpoint (a virtual IP and DNS name) and automatically routes traffic to the pods backing it. It also handles load balancing across those pods.

You can choose different ways to expose the service: ClusterIP for internal access within the cluster, NodePort to expose on a port on each node, or LoadBalancer to provision an external load balancer. This decouples clients from individual pod lifecycles and IPs, making the app reliably reachable.

The other options don’t fit this exact role: a Deployment manages the lifecycle and scaling of pods, not their network exposure; Ingress handles external HTTP/HTTPS routing rules to services (often behind a Service); a Pod is the smallest unit that runs containers but does not offer a stable, cluster-wide network endpoint or built-in load balancing.