 Cross-layer interaction and service mapping

**Cross-layer interaction** and **service mapping** are concepts often discussed in the context of network management, system architecture, and distributed systems. Here’s a brief overview of each: ### Cross-layer Interaction 1. **Definition**: Cross-layer interaction refers to the communication and collaboration between different layers of a system or architecture. This is particularly important in network protocols, where layers (like the application, transport, network, and link layers) typically operate independently.