What is a network diagram?

A network diagram serves as a visual representation of the network layout, illustrating the various components such as routers, switches, firewalls, servers, and connections between them. This diagram is crucial for understanding how the network is structured and facilitates troubleshooting, planning, and documentation tasks. By showing the physical or logical arrangement of the network, it helps IT professionals and stakeholders comprehend the flow of data, identify potential issues, and plan for future expansions or changes. The clarity provided by a visual format makes complex relationships easier to understand compared to textual descriptions or policy documents.