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When a user calls you with a particular problem, you might want to know what operating system and service pack is installed on that user s system. You learned that this information is stored as properties of the computer object. The only challenge, then, is to locate the computer object, which might be more difficult in a complex Active Directory with one or more domains and multiple OUs. The Active Directory Users and Computers snap-in provides easy access to a powerful, graphical search tool. This tool can be used to find a variety of object types. In this context, however, your search entails an object of the type Computer. Click the Find Objects In Active Directory button on the console toolbar. The resulting Find Computers dialog box is illustrated in Figure 5-4. You can select the type of object (Find), the scope of the search (In), and specify search criteria before clicking Find Now.

Attachments posted to newsgroups are renowned for carrying viruses. Newsgroup posters are relatively anonymous, so you rarely have any way of verifying the identity of the person who uploaded the attachment. Before opening an attachment that you ve downloaded from a newsgroup, be sure to subject it to vigorous testing for viruses. Some posters digitally sign their attachments and their posts. In these cases, you can verify the identity of the poster, although this does not guarantee that the attachment is safe for your computer.

To complete this chapter, you must have a computer that meets the minimum hardware requirements listed in the preface, About This Book. You must also have Windows XP Professional installed on the computer.

Lesson 1: Preparing to Log Ship . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 653 Lesson 2: Configuring Log Shipping Options . . . . . . . . . . . . . . . . . . . . . . . . . . 658 Lesson 3: Configuring Log Shipping Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . 676 Lesson 4: Configuring Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 684

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The Timer component allows you raise the Timer.Tick event at regular intervals. By writing code to handle this event, you can schedule your application to call methods or take other actions at predefined intervals. For example, you might want to display the current time in a Label control and update it every minute. The key property of the Timer component is the Interval property. The Interval prop erty specifies the number of milliseconds between intervals of the Tick event. For example, if the Interval property is set to 2000, the Tick event will be raised every two seconds. The Interval property can be set in the Properties window or in code, as shown in the following example:

' Cast the current principal as a WindowsPrincipal object Dim currentPrincipal As WindowsPrincipal = _ CType(Thread.CurrentPrincipal, WindowsPrincipal) // C# // Specify that WindowsPrincipal should be used AppDomain.CurrentDomain.SetPrincipalPolicy(PrincipalPolicy.WindowsPrincipal); // Cast the current principal as a WindowsPrincipal object WindowsPrincipal currentPrincipal = (WindowsPrincipal)Thread.CurrentPrincipal;

When you are working in an application and it is time to print, you usually have the option to choose any printer that you currently have installed. Some applications also permit you to install a new printer from within the application s Print dialog box.

Function The total number of messages sent to transport since start-up The rate that messages are sent to transport The total number of messages submitted by clients since service start-up The rate that clients submit messages The maximum number of concurrent client log-ons since the service started The number of messages in the mailbox store s receive queue

Description Installs and configures event logging. Installs and configures message queues. Installs and configures performance counters. Installs and configures a Windows service. Installs the executables required by a Windows service. ServiceInstaller and ServiceProcessInstaller work in concert to install a Windows service.

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The records in Table 9-3 provide the main functionality of DNS in a Windows Server 2008 implementation. Exam Tip

Describe the default Group Policy processing behavior, including refresh intervals and CSE application of policy settings.