A logical network diagram is the most useful document for understanding the paths that data takes through a network and the interconnections between devices, which is vital for troubleshooting, managing the network, and planning future changes or expansions. While a physical network diagram shows the physical layout and connections, it does not necessarily indicate the path data takes. A wiring diagram details individual cable runs and connectors but does not give an overview of data flow or device interconnections. A site survey report is typically used to assess coverage for wireless networks and would not detail the specific data paths or device interconnections within a network.