Under the Open System Interconnection model, which layers are responsible for allowing interoperability among unrelated software systems?

The correct choice emphasizes the layers of the Open System Interconnection (OSI) model that are primarily responsible for enabling interoperability among different software systems. Layers 5 to 7, known as the Session, Presentation, and Application layers, play a crucial role in managing and facilitating communication between applications across diverse networks.

The Session layer (Layer 5) is responsible for establishing, managing, and terminating sessions between applications, which allows different systems to communicate effectively. The Presentation layer (Layer 6) ensures that data is in a usable format and can include data translation, encryption, and compression, enabling different systems to interpret the data correctly. Finally, the Application layer (Layer 7) provides network services directly to user applications, ensuring that these applications can communicate regardless of the underlying hardware or network configurations.

Together, these layers ensure that various software systems can work together, even if they are built on different architectures or programming languages. They establish a framework for application-to-application communication, which is essential for interoperability in networked environments.