Computer Networking Information
Computer networking is the scientific and engineering discipline concerned with communication between two or more computer systems - a computer network involving at least two devices capable of being networked with at least one usually being a general purpose computing platform such as a PC. The devices can be separated by a few meters and connected wirelessly (e.g. via Bluetooth) or thousands of kilometers and connected ultimately by terabit backbone networks (on the global Internet). Computer networking is considered a sub-discipline of telecommunications, and often also of computer science, information technology and computer engineering especially where these are concerned with parallel processing.
In practice, computer networking is concerned with every aspect of connecting systems for digital communications, from manufacturing tolerances of interface ports to multi-host multi-CPU and -GPU APIs to TCO issues, to wireless spectrum interference and user privacy and security. The professional systems integrator as of 2010 has become a telecom and computer network integrator and this profession is largely defined by the problems unsolved by open standards - requiring a professional to choose between the various proprietary options.
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Diagram of different network topologies.Network topology is the study of the arrangement or mapping of the elements (links, nodes, etc.) of a network, especially the physical (real) , logical (virtual) and the interconnections between nodes.
A local area network (LAN) is one example of a network that exhibits both a physical topology and a logical topology. Any given node in the LAN will have one or more links to one or more other nodes in the network and the mapping of these links and nodes onto a graph results in a geometrical shape that determines the physical topology of the network. Likewise, the mapping of the flow of data between the nodes in the network determines the logical topology of the network. It is important to note that the physical and logical topologies might be identical in any particular network but they also may be different.
Any particular network topology is determined only by the graphical mapping of the configuration of physical and/or logical connections between nodes - Network Topology is, therefore, technically a part of graph theory. Distances between nodes, physical interconnections, transmission rates, and/or signal types may differ in two networks and yet their topologies may be identical.
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Did you know?
- The name ethernet is derived from the concept of the ether.
- Network tomography is the study of the internal characteristics of a network by examining information derived from end point data.
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- Computer networking
- Internet
- Internet protocols
- Network management
- Virtual private networks
- Wireless networking
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