Information technology networks connect computers to share files, data and other resources. They employ a broad set of rules referred to as communication protocols to transmit information using both wireless and physical technologies. These networks are taught in degree programs that teach information technology.

A network topology refers to the way that a network is constructed to create a link between devices and systems in various ways, such as bus or ring, mesh fully connected (or complete), stars, hierarchical and trees. These types of structures come with different advantages, disadvantages and costs for the business that employs them. A topology may be logical or physical and can be either a private or a public one.

In a computer network, the central component (such as a hub, switch, or router) connects with other computers that can send and receive messages. The central component, also known as server, is the node. This is one of the most commonly used network configurations, however it has its own drawbacks for instance, a single broken https://singleclicksystems.com cable that could stop communication.

A network server is the computer that stores data and software that is shared by many users on the network. Servers are usually built on a model that is client-server based where the clients represent the desktop applications of the users and the servers are able to process data in real time. As businesses require more accessibility of their crucial data IT staff could be required to design a high-availability cluster that can process data in a redundant manner and is able to be resilient, so that it can continue to function even if one component fails.