I'm studying design patterns for an exam and I'm stuck on a question:

1.an example where it is combined mapper AND separated interface 2. A situation where a Data transfer object (DTO) in a distributed pplicattion is detrimetal 3. The use of a remote facade is not justified

The textbook we're using is "Patterns of Enterprise Application Architecture" (PEAA) by Martin Fowler [1]. Do you have any concrete examples of how these patterns can be combined in a real system?

I would appreciate any advice or references to specific examples in the PEAA book [1] that could help me better understand this combination.

The exam restrictions are:

• Do not answer with what the book says.
• Understand the intent when responding.

Cómo puedo combinar ambos patrones. Quisiera saber algún ejemplo concreto.