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updates, service packs, and update rollups known collectively as high priority updates. After a moment s time, Windows displays a list of these updates, along with their number, total size, and estimated download time. You can click any of the listed updates to view more information, but the most expedient action is to simply click the Install button. These high priority updates should be installed as soon as they become available.

Here, we initialize two properties in one line of code: Message (through the constructor) and Source (through an object initializer). Without the new syntax, we would have to declare a temporary variable like this:

Lesson 1: Understanding Group Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-3

and hardware enhancements and updates in addition to the high priority updates sought by Express Install. Click each of the three links on the left side Review High Priority Updates, Select Optional Software Updates, and Select Optional Hardware Updates to view information about available updates in those categories. Read the description for each item, and then select the check box for each update that you want to install. (Because you ll almost certainly want to install all high priority updates, they re selected by default.) After you finish selecting items, click Go To Install Updates for a final review, and then click Install.

Lesson 2: Group Policy Planning Strategies . . . . . . . . . . . . . . . . . . . . . . . 10-23

6

Lesson 3: Implementing a GPO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-31

var exception = new Exception("message"); exception.Source = "LINQ in Action"; throw exception;

Figure 6-11.

10-1

Windows updates are not distributed on a regular basis. Instead, they re published when the need arises, such as when a patch is developed for a newly discovered security vulnerability. In Windows XP, you can eliminate the necessity to check for updates manually by using a feature called Automatic Updates. With this feature enabled, you can instruct Windows to periodically check for high priority updates. Using the preferences you define, Automatic Updates checks for new high priority updates, downloads them in the background, using a small segment of your available Internet connection bandwidth, and with your permission installs them automatically. Note Automatic Updates retrieves only high priority updates. To view, download, and install other Windows updates and newly released drivers, you need to visit the Windows Update site. Each Windows XP Service Pack has included a major overhaul of the Automatic Updates feature, and Service Pack 2 is no exception. In the original release of Windows XP, you could choose to be alerted when new updates were available, and Windows would download them for you to install, but the operating system wouldn t actually perform the updates. With SP2 installed, the Automatic Updates dialog box includes new options, including the ability to install high priority updates on a specified schedule. After you first install Windows XP, the operating system is persistent about reminding you to set up the Automatic Updates feature. You can adjust the related options at any time by opening Automatic Updates, which you can do in any of the following ways:

10-2

Security Center, see Monitoring Windows XP Security, page 170.)

10

Another kind of initializer has been added: the collection initializer. This new syntax allows us to initialize different types of collections, provided they implement System.Collections.IEnumerable and provide suitable Add methods. Here s an example:

Open Automatic Updates in Control Panel (if you use Classic view). Enter wuaucpl.cpl at a command prompt or open a shortcut to this command.

Prepare your test environment according to the descriptions given in the Getting Started section of About This Book Complete the practices for installing and configuring Active Directory as discussed in 2, Installing and Configuring Active Directory Learn to use Active Directory administration tools as discussed in 3, Administering Active Directory Complete the practices for configuring sites and replication as discussed in 5, Configuring Sites and Managing Replication Complete the practices for implementing an OU structure as discussed in 6, Implementing an OU Structure Complete the practices for creating and maintaining user accounts as discussed in 7, Administering User Accounts Complete the practices for creating and administering groups as discussed in 8, Administering Groups