OSI Model
The OSI (Open Systems Interconnection) Model is a conceptual framework that standardizes the functions of a telecommunication or computing system into seven distinct layers, from physical transmission to application-level data. It defines how data is transmitted between devices over a network by breaking communication into modular components, ensuring interoperability between different systems and vendors. This model serves as a reference for understanding network protocols and troubleshooting connectivity issues.
Developers should learn the OSI Model to grasp fundamental networking principles, which is essential for designing, debugging, and securing networked applications, especially in distributed systems or cloud environments. It helps in identifying where issues occur (e.g., at the transport layer for TCP/UDP problems) and understanding how protocols like HTTP or TCP/IP map to specific layers, aiding in efficient problem-solving and communication with network engineers.