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Network/File Server System

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In a Local Area Network, all the data and programme files are stored in a file server. A file server is the central node in the network. All the users connected to the file server through different nodes can access the data and information stored in the file server simultaneously. The file server in a LAN acts as a central hub for sharing peripherals like, printers, modems, etc. In a LAN, an application running on a workstation reads and writes files on the file server. In many cases the entire files are pumped across the network on behalf of the operations taking place on LAN PCs. A file server is not involved in processing of an application. It simply stores files for applications that run on LAN PCs. For example, you might have a personal database manager and then request information in a file on the on the file server. The file server sends all or part of the data file across the network to your workstation. As you work with your personal database manager and the database on your workstation, the file server does not take part at all. When you save the file it goes back to the file server across the network.

Server/Client System :

The limitations of the network/ file server system have led to the genesis of the client/server system. It delivers the benefits of the network-computing model along with the stored data access. Any local area network could be considered as client/server system, since workstations (clients) request services such as data, program file or printing from server.

(network servers). Clients are PCs or workstations on which users run applications. Clients rely on servers for resources, such as files, devices, and even processing power.

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Client Server Technology
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