Information Technology Networks

Information technology networks interconnect computers to share data, files and other resources. They use a system of rules referred to as communication protocols to transmit information via wireless and physical technologies. These networks are taught in degree programs that instruct in information technology.

A network topology describes how the network is created to connect devices and systems. There are several kinds of topologies like mesh, bus, ring and, as well as fully connected (or completed) the star, the hierarchical and tree. These structures have different advantages, disadvantages and costs for the company that utilizes them. A topology may be logical, physical or private.

In a computer network, the central component, which could be a hub or switch, connects to other computers that transmit and receive messages. The central component, also known as a server, is called the node. This is a typical network configuration, however it has some disadvantages. For instance, a single broken wire can stop communication.

A network server is the computer that stores data and software that is shared by a number of users on the network. Servers typically operate on a model of client-server where the clients represent the desktop applications of the users while the servers are able to process data in real time. As businesses require more availability of their data, IT personnel may be called upon to architect a high-availability cluster capable of processing data in a redundant and resilient way to continue to function in the event of a single failure.

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