Computers are connected via information technology networks to share files, data and other resources. They use a system of rules called communication protocols to send information using physical and wireless technologies. Colleges offer degrees in information technology that teach students about these networks.
A network topology is the method that a network is laid out to form a connection between systems and click this devices in various ways, like bus mesh, ring, fully connected (or complete) and star, hierarchical, and tree. These kinds of structures have distinct 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, like the hub or switch connects to other computers which send and receive messages. The central component, also known as a server, is called the node. This is one of the most commonly used network configurations, however it comes with a few drawbacks for instance, one cable breaking that can stop communications.
A network server is a computer which stores software and files that are shared by multiple users on the network. Servers typically operate on a client-server model in which the clients represent the desktop applications of the users while the servers process data in real time. As companies require greater availability of their data that is critical IT staff could be required to design an high-availability cluster that can process data in a redundant fashion and is resilient enough that it can continue to function even if one component fails.
