MCSA/MCSE Self-Paced Training Kit (Exam 70-270): Installing ...

1-28 Chapter 1 Introduction to Windows XP Professional
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information is important for users with multiple user accounts, such as a user who has
a regular user account as well as a user account with administrative privileges.
If a computer running Windows XP Professional is joined to a domain (or if the Welcome
screen is disabled even when the computer is a member of a workgroup), you
can access the Windows Security dialog box by pressing CTRL+ALT+DELETE at any time
while Windows is running. If the Welcome screen is enabled, pressing
CTRL+ALT+DELETE activates Task Manager instead. Figure 1-10 shows the Windows
Security dialog box, and Table 1-2 describes the Windows Security dialog box options.
Figure 1-10 Use the Windows Security dialog box for many security activities.
Table 1-2 The Windows Security Dialog Box Options
Option Description
Lock Computer Allows users to secure the computer without logging off. All programs
remain running. Users should lock their computers when they leave for a
short time. The user who locks the computer can unlock it by pressing
CTRL+ALT+DELETE and entering the valid password. An administrator can
also unlock a locked computer. This process logs off the current user.
Whether the Windows Security dialog box is available or not, you can also
press WINDOWS KEY+L to immediately lock the computer.
Log Off Allows a user to log off as the current user and close all running programs,
but leaves Windows XP Professional running. You can also log off
Windows by choosing Log Off from the Start menu.
Shut Down Allows a user to close all files, save all operating system data, and prepare
the computer so that it can be safely turned off. You can also log off Windows
by choosing Turn Off Computer from the Start menu.
Change Password Allows a user to change his or her user account password. The user must
know the current password to create a new one. This is the only way
users can change their own passwords. Administrators can also change
the password.