What Does Network Mapping Mean?

Network mapping is a process used to discover and visualize physical and virtual network connectivity via a group of interrelated tasks that facilitate the creation of a network map, including flow charts, network diagrams, topology detection and device inventories. It is geared toward the creation of visual aids and materials that can be used for a broad array of purposes, especially network maintenance.

Techopedia Explains Network Mapping

Network mapping systems use an active probing method to gather network data by sending probe packets that hop from node to node, which return information to the mapping system with the IP address and other technical details. In large networks like the Internet and its smaller constituents, this probe may be limited to gathering publicly available, non-confidential and general node information.