It is a computer that is designed to process requests to keep and share where it can deliver data on a network or over the internet. It is a high powered machine connected to multiple client computers processing applications on it. It helps to manage network resources, send or receive emails, hosts a site, print, perform certain dedicated tasks like file transfer on FTPs, etc. Some systems can be based on peer-to-peer networking that allows all devices to function like a server or client depending on the requirement.
