Deploy Lamp Stack on Kubernetes Cluster understandig services

I don’t understand the part of the question about services.
It says,

Create a service for lamp named lamp-service, port must be 80, nodePort must be 30008 and its type must be LoadBalancer.

Don’t exists a parameter named nodePort for LoadBalancer service. What does it mean nodePort in this context?

I know that exists a service type nodePort.