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Contoso, Inc. recently hired you as a system administrator for its small network of ten Windows XP Professional computers. After performing a security audit, you realize that two of the computers have not yet had Service Pack 2 for Windows XP installed. You use Internet Explorer to visit the Windows Update site, and are notified that the computers were activated with invalid product keys. Contoso has purchased additional valid product keys for these computers. What is the quickest way to resolve the problem to allow Service Pack 2 to be installed Choose the correct answer. A. Insert the Windows XP Professional CD-ROM, and then restart the computer. Perform an upgrade installation over the existing Windows XP system directory. When prompted, provide the new valid product key, and then install Service Pack 2. B. Back up all files and settings on each computer. Insert the Windows XP Professional CD-ROM, and then restart the computer. Perform a new installation of Windows XP by reformatting the hard disk. When prompted, provide the new valid product key, and then install Service Pack 2. Restore the files and settings from the backup. C. Change the HKEY_LOCAL_MACHINE\Software\Microsoft\WindowsNT\Current Version\WPAEvents\OOBETimer Registry value, and then run the Msoobe.exe tool to reset the product activation key. Then install Service Pack 2.

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This problem is now well understood in the community, and most solutions support approximately the same functionality But we aren t finished with inheritance As soon as we introduce inheritance into the model, we have the possibility of polymorphism The User class has an association to the BillingDetails superclass This is a polymorphic association At runtime, a User object may reference an instance of any of the subclasses of BillingDetails Similarly, we want to be able to write polymorphic queries that refer to the BillingDetails class, and have the query return instances of its subclasses SQL databases also lack an obvious way (or at least a standardized way) to represent a polymorphic association A foreign key constraint refers to exactly one target table; it isn t straightforward to define a foreign key that refers to multiple tables.

Populate the deployment share Again using Deployment Workbench, you add the operating system versions you want to deploy to the deployment share, as shown in Figure 3-3, as well as all of the other software you want to install on your workstations, including applications, device drivers, language packs, and updates.

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Installing Windows XP Professional (1.0)

We d have to write a procedural constraint to enforce this kind of integrity rule The result of this mismatch of subtypes is that the inheritance structure in your model must be persisted in an SQL database that doesn t offer an inheritance strategy Fortunately, three of the inheritance mapping solutions we show in chapter 5 are designed to accommodate the representation of polymorphic associations and the efficient execution of polymorphic queries The next aspect of the object/relational mismatch problem is the issue of object identity You probably noticed that we defined USERNAME as the primary key of our USERS table Was that a good choice How do we handle identical objects in Java.

D. Right-click My Computer and then click Properties. Click the Advanced tab and click the Environment Variables button. Select the PRODUCT_KEY variable, and then click Edit to specify a new product activation key. Then restart the computer and install Service Pack 2.

Which of the following are valid techniques for removing Service Pack 2 for Windows XP Choose two correct answers. A. Click Start, click All Programs, click Service Pack 2, and then click Uninstall. B. In Add Or Remove Programs, click Windows XP Service Pack 2, and then click Remove. C. From the command prompt, change to the %systemroot%\$NtservicepackUninstall$\spuninst folder. Run the command spuninst.exe. D. From the command prompt, change to the %systemroot%\$NtservicepackUninstall$\ folder. Run the command setup.exe.

Although the problem of object identity may not be obvious at first, we ll encounter it often in our growing and expanding e-commerce system, such as when we need to check whether two objects are identical. There are three ways to tackle