A wiring diagram provides specific details about each wire and connection in the network, making it the best documentation for understanding physical connections and layout. A floor plan would give an overall view of the physical location of network elements but would lack detailed connection information. A rack diagram illustrates the arrangement of equipment in racks but may not provide the intricate details on cable connections. A site survey report offers general information about the location suitable for network installation and coverage but does not focus on the specific wiring detail.