What brand is cnm? The answer is: cnm is the abbreviation of centralized network management. Centralized computer network consists of a large central system, and its terminal is the client. All data are stored in the central system and managed by the database management system. All the processing is done by the large system, and the terminal is only used for input and output. The terminal itself does not do any processing, and all tasks are processed on the host. The main feature of centralized data storage is that all data can be stored in one place.