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A computer or device on a network that manages network resources. For example, a file server is a computer and storage device dedicated to storing files. Any user on the network can store files on the server. A print server is a computer that manages one or more printers, and a network server is a computer that manages network traffic. A database server is a computer system that processes database queries.
Servers are often dedicated, meaning that they perform no other tasks besides their server tasks. On multiprocessing operating systems, however, a single computer can execute several programs at once. A server in this case could refer to the program that is managing resources rather than the entire computer.
If you're not familiar with the functions of a server, but have heard the term in passing, you may think of a server as some mystical computer beast that performs amazing tasksand generally is a hands-
What makes the term server doubly confusing is that it can refer to both hardware and software. That is, it can be used to describe a specific software package running on a computer or the computer on which that software is running.