A server is a computer program or device, that provides a service to another computer program (and it user). it is managing network resources. Servers are often referred to as dedicated because they carry out hardly. any other tasks apart from their server tasks.
There are number of categories of server, including print servers, file server, networking servers and database servers.In theory, whenever computers share resource with client machines they are considered servers.
Types of servers
1. application server
2. proxy serve
3.mail server
4. virtual server
5. blade server
6. file server
7.policy server
