Distributed network consists of some interconnected workstations , various shared storage devices and necessary input and output devices. Workstations have their own memory , storage, and processing capabilities, so they can work locally. Local work means the use of information and communication technology workstation's own software , data and processing capabilities to perform any work that is located in the workstation. Moreover, with the help of this workstation, the server connected to it can also receive computer services. Some distributed networks have global storage media containing global information and software. Workstations can be used for these purposes.