Certified Kubernetes Application Developer (CKAD) Practice Test

What component of an Ingress resource specifies the service and port to forward traffic to?

1. path

2. backend

3. rules

4. host

The correct answer is: backend

The component of an Ingress resource that specifies the service and port to which traffic should be forwarded is the backend. Ingress resources are used to manage external access to services in a Kubernetes cluster, and the backend section defines the specific service and port that incoming traffic should be directed to based on the defined rules. When configuring an Ingress, the backend specifies the following crucial details: the name of the service within the cluster and the port number that the service is listening on. This information is essential because it allows the Ingress controller to properly route the incoming requests to the correct destination service, ensuring that client requests are handled appropriately. The other components, such as the path, rules, and host, play different roles in the Ingress resource configuration. The path specifies the URI path for routing, rules define the conditions under which traffic should be routed, and the host defines the domain for which the Ingress settings apply. However, it is the backend that directly connects the incoming traffic to the actual service that will process the requests, making it a critical aspect of the Ingress resource.