A server is a computer related term. This is a computer program or a device that provides functions for other programs, which are known as clients. This is called the client and the server model
Client server systems
A server is a computer program that provides services to other computer programs in either the same or the other computer. The computer, which also has a server program, is referred to as the server and this is a dedicated machine that can also be used for other reasons as well. A server program usually waits and fulfills the requirements from other client models, which are running in either the same or some other computer. Servers are classified as per their purpose. A web server is a computer program that serves requested HTML files. There are various kinds of servers based on the client requirement. They are as follows.
The different kinds of servers
The different kind of servers comprise of an application server that is a program in a computer in a distributed network that provides business logic for application programs, A proxy server that acts as an intermediary between the end point device like a computer and another server from which the request is being placed, a mail server, which is an application that receives incoming email from all local users and remote senders, a virtual server, which is running on a shared server where the user would have complete control of the server, a file server which is responsible for central storage and the management of data files, and last but not the least, a policy server which is a component of a policy based network.
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