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The nodes of a computer network can include personal computers, servers, networking hardware, or other specialised or general-purpose hosts. They are identified by network addresses, and may have hostnames. Hostnames serve as memorable labels for the nodes, rarely changed after initial assignment.

Data structure diagram ( DSD) is a diagram of the conceptual data model which documents the entities and their relationships, as well as the constraints that connect to them. The basic graphic notation elements of DSDs are boxes which represent entities. The arrow symbol represents relationships.

Network topology is the topological [4] structure of a network and may be depicted physically or logically. It is an application of graph theory [3] wherein communicating devices are modeled as nodes and the connections between the devices are modeled as links or lines between the nodes.

Network architecture. Network architecture is the design of a network. In computing, it refers to a computer network which is a framework for the specification of a network's physical components and their functional organization and configuration, its operational principles and procedures, as well as communication protocols used.

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