Network Models

modelo de redes
network model

Decentralized

In a decentralized environment, users take care of their systems and there is no electronic exchange of resources or information between these separate systems.

Centralized

In a centralized environment, a single computer accommodates all of an organization's data, and users access that data through terminals that are devices that contain a keyboard and screen to send and receive data over a communication link.

Distributed

A distributed system consists of independent computers connected to each other. The basic difference between a distributed system and a computer network is that in a distributed environment resources are made available to the user in a transparent way, that is, users do not know that the computers are interconnected. The distributed system looks like a single system.

Client / Server

Most applications and network communications today are based on a client/server model. In this model, network services (for example, file transfer, email, etc.) and the programs used by end users to access these services are described. Servers provide services to the computer network, and computers that access these services are considered clients. In this model, there is a hierarchy of equipment, that is, a different equipment controls network services and resources.

File Sharing

Another model of network communication is file sharing, also known as peer-to-peer or peer-to-peer. This model eliminates the need for centralized servers, and allows all interconnected computers to exchange files regardless of type, residing on their disks (HDs). There is no hierarchy of equipment, each equipment can perform the functions of client and server.

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