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A local user profile is stored in the %SystemDrive%\Documents And Settings (or %SystemRoot%\Profiles) folder on the local hard disk Windows creates a local user profile the first time a user logs on to the computer If the user makes changes to the profile, the changes affect only the computer on which the changes are made A roaming user profile is stored on a network server, which makes it available when a user logs on to any computer on the network Windows creates a local copy of the user profile the first time a user logs on to a computer If the user makes changes to the profile, Windows merges the changes into the server copy when the user logs off; therefore, the revised profile is available the next time the user logs on to any computer.

A GPO linked to a site affects all computers in the site. Because directory information is replicated among all the domain controllers in the site and to any domain controllers in sites for which a site link has been established, a GPO linked to a site is applied to all computers in that site, without regard to the domain containing the computers. Therefore, a GPO can be applied to multiple domains within a forest, even though the GPO exists only as a stored entity on a single domain and must be read from that domain when the affected clients read their site-linked Group Policy. If child domains are set up across wide area network (WAN) boundaries, the site plan must consider where GPOs are linked. Otherwise, the computers in a child domain must access a site-linked GPO across a WAN link, which increases the Group Policy processing time.

Roaming profiles are easily managed by and are ideally suited to Windows Server 2003 and Windows 2000 Server With some extra effort, however, you can achieve some of the benefits of a roaming user profile even without a server edition of Windows For details about this workaround, see Using Roaming User Profiles, page 481 A mandatory user profile is one that can be changed only by an administrator Like a roaming user profile, a mandatory profile is stored on a network server, and Windows creates a local copy when a user who has been assigned a mandatory profile logs on for the first time Unlike a roaming user profile, a mandatory profile is not updated when the user logs off.

We can initialize collections represented by a class that implements the IEnumerable interface and provides an Add method. We can use syntax of the form {x, y, z} to describe arguments that match the Add method s signature if there is more than one argument. This enables us to initialize many preexisting collection classes in the framework and third-party libraries. This generalization allows us to initialize a dictionary with the following syntax, for example:

You use the Group Policy Object Editor to organize and manage the Group Policy set tings in each GPO. The Group Policy Object Editor for the Default Domain Policy GPO is shown in Figure 10-1. Note that the root node of the Group Policy Object Editor is displayed as the name of the GPO and the domain to which it belongs, in the format

This makes mandatory profiles useful not only for individual users whom you want to severely restrict, but also for multiple users (for example, all users in a certain job classification) to whom you want to apply consistent job-specific settings Multiple users can share a mandatory user profile without affecting others Users who have been assigned a mandatory profile can make profile changes while they re logged on (unless prevented by policy settings), but the network copy remains unchanged Although a copy of the profile changes and.

For example: Default Domain Policy [server1.contoso.com] Policy, as shown in Figure 10-1.

Managing User Profiles all remains on the computer after a user logs off, at the next logon Windows recopies the original profile from the network share. For information about assigning a mandatory user profile, see Using Mandatory User Profiles, page 485. Note

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new Dictionary<int, string> {{1, "one"}, {2, "two"}, {3, "three"}}

Windows XP Home Edition uses local user profiles. As stated earlier in the At Home sidebar, it s possible, but not practical, to implement roaming or mandatory profiles in Home Edition.

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In the profiles folder (%SystemDrive%\Documents And Settings or %SystemRoot%\ Profiles), you ll find two profiles that aren t associated with a particular user account: All Users and Default User. (The Default User folder is hidden.)