Network Operating System
The Network Operating System (NOS) is the most important software on a network. The network operating system organizes and manages alla the activities on a network. On some networks, one central computer, called a server, is responsible for running the network operating system. Netware, Windows 2000 Server, Linux and LANtastic are examples of popular network operating systems.Network Driver
A network driver is the software that allows the network inteface card in a computer to communicate with the network. The network driver must be compitable with the network interface card and the operating system on a computer.Server Software
A server is a computer that makes information and resources available to other computers on a network. Server software enables a server to perform a specific task. For example, e-mail srver software allows a server to process and manage e-mail messages. the server software must be compatible with the network operating system.Application Software
Application software consists of the programs that run on computers connected to a network. Application software includes productivity programs, such as word processors, spreadsheet and database programs, and customized software, such as programs used for inventory and accounting purposes. Application software can be stored on each computer connected to the network or on a server used only for storing application software.Management Software
Networks that connect several computers often use management software, which allows network administrators to organize and manage a network more efficiently. Management software can help maintain network performance and alert the network administrator in case problems or errors occur on a network.