For example, Windows 2000 supports the ReSerVation Protocol (RSVP), but Microsoft no longer
supports this service on Windows XP and newer systems. The loss of this service affects the method you
use to reserve network resources and, consequently, the use of utilities. See the MSDN article at http://
msdn2.microsoft.com/en-us/library/aa374137.aspx for details. Of course, even if the latest
version of Windows supports a particular service, you??™ll want to ensure the service runs automatically.
As an example, Windows XP originally enabled the TelNet service, but disabled it for the SP2 release.
You??™ll often need to rely on third-party resources, such as the Web site at http://www.ss64.com/
ntsyntax/services.html, to obtain information about services because Microsoft tends to hide this
information (or not publish it at all).
172 CHAPTER 6 WORKING WITH SCRIPTS
As you can see, the sample code uses the WScript object to send information to the screen. The
WScript object is always available at the command line, even though you have probably never used
it as part of a browser application. As shown in the example, it??™s important to know how to use both
functions and subs, the two building blocks of VBScript.
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