Network Components: Network Nodes
Server (or a host computer) is a central computer in the network storing software and/or data that can be accessed by clients
Client is the input/output hardware device at the other end of a communication circuit. It typically provides users with access to the network and to the the data and software on the server.
Front End Processor is a specialized computer with special software and hardware which controls a computer network
Host Computer is the central processing unit (CPU) which processes the users request
File Server is a computer in which data is stored for a network (usually LAN) (also other specialized servers possible such as mail server, security server).