15.7Main deployment targets

Know these three:

CloudHub 2.0
Runtime Fabric
On-prem Mule Runtime

Plus legacy/current CloudHub 1.0 environments you may encounter.

CloudHub 2.0

Managed MuleSoft cloud deployment.

Runtime Fabric

Mule applications running on containerized infrastructure under the customer's infrastructure/cloud setup.

On-prem

Organization manages Mule runtime servers itself.

For interview survival, CloudHub 2.0 is the one I'd understand best.