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Windows Server 2003 in a Nutshell by Mitch Tulloch

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Name

Services—Concepts

Synopsis

A service is a process that runs in the background on a machine to perform actions in response to client requests. Services on Microsoft Windows platforms are the equivalent of daemons on Unix platforms. An example of a service is the World Wide Web (WWW) service, which runs on a server on which Internet Information Services (IIS) is installed. The WWW service runs in the background on the server, waiting to receive Hypertext Transfer Protocol (HTTP) requests from web browsers. When an HTTP request is received, the WWW service responds by sending the requested files or performing the requested action.

Table 4-49 provides a list of many of the services that can run on WS2003 machines, focusing on services important for everyday administrative functions and tasks. Note that installing optional Windows components or other Microsoft server applications such as Exchange Server or SQL Server adds additional services to your machine.

The following is a key to Table 4-49:

A

Enabled, starts automatically during bootup

M

Enabled, must be manually started by an administrator

D

Disabled, must be enabled before it can be started

Table 4-49. WS2003 services

Service

Startup type

Description

Alerter

M

Notifies selected users and computers of administrative alerts

Automatic Updates

A

Enables the download and installation of critical Windows updates

Background Intelligent Transfer Service (BITS)

M

Transfers data between clients and servers in the background

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