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Practice 1: Create a dial-up connection to an Internet service provider (ISP). After this connection is working properly, configure Internet Connection Sharing (ICS) to allow multiple computers to access the Internet across a single link. Practice 2: If you have a VPN server available, establish a VPN tunnel. Configure this connection with ICS to allow multiple computers to use the VPN simultaneously. Practice 1: Configure offline Web pages to store several Web sites offline. Open the Synchronize dialog box, and adjust the properties to automatically download these sites at a specific time. After this time has passed, disconnect from the network and attempt to access one of the offline Web sites. Practice 2: Press Ctrl+H to open the history toolbar. Notice that all sites visited in the last several weeks are available for recall. Practice 3: Use the Internet Options dialog box to clear your temporary Internet files and history. This helps to protect your privacy if other people have access to your computer. Practice 4: Using the Security tab of the Internet Options dialog box, compare the security settings for the Internet and Trusted Sites zones. Consider how they differ, and how that improves the security of your computer.

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Without an explicit discriminator value, Hibernate defaults to the fully qualified class name if you use Hibernate XML files and the entity name if you use annotations or JPA XML files. Note that no default is specified in Java Persistence for nonstring discriminator types; each persistence provider can have different defaults. This is the equivalent mapping in JPA XML descriptors:

Practice 5: Using the Privacy tab of the Internet Options dialog, examine the settings for each of the six privacy levels. Temporarily set your privacy level to Block All Cookies, and then visit several of your favorite Web sites. Consider how your user experience was affected. Afterwards, set the privacy level to its original setting. Practice 1: If IIS was not installed with Windows XP, install it from Add/ Remove Windows Components in Control Panel. Familiarize yourself with the different IIS components available for installation. Practice 2: Edit the application configuration to remove unused script mappings. Although this does not change the site s existing functionality, it does dramatically reduce the risk of security vulnerabilities. Practice 3: Add a virtual directory, and disable anonymous access to the virtual directory. Access the virtual directory using Internet Explorer and notice that you are prompted for authentication. Provide your user name and password, and verify that you have access. Practice 4: Modify NTFS file permissions for Web content within the IIS home directory. Notice how removing Read file permissions for the IUSR_computername account affects your ability to anonymously access files. Practice 5: Install an IIS security hot fixes if any are available.

Configure, manage, and implement Internet Information Services (IIS).

<entity-mappings> <entity class="auction.model.BillingDetails" access="FIELD"> <inheritance strategy="SINGLE_TABLE"/> <discriminator-column name="BILLING_DETAILS_TYPE" discriminator-type="STRING"/> ... </entity> <entity class="auction.model.CreditCard" access="FIELD"> <discriminator-value>CC</discriminator-value> ... </entity> </entity-mappings>

For the following task, you should complete at least Practice 1. If you want hands-on experience with every aspect of the exam and you have multiple networked Windows XP computers, complete Practices 2 and 3 as well.

Practice 1: Use the Remote tab of the System Properties dialog box to allow both Remote Desktop and Remote Assistance incoming connections. Practice 2: Open the Remote Desktop Connection tool, and use the Experience tab to optimize the performance for local area network (LAN) speeds. Connect to a remote computer by using Remote Desktop. Then disconnect, and optimize the performance of the connection for modem speeds. Reconnect, and notice how the experience is different. Practice 3: Have another Windows XP user send you a Remote Assistance invitation, and then connect to the remote computer by using Remote Assistance.

The Tier2 OU has four GPOs linked to it, as follows:

Sometimes, especially in legacy schemas, you don t have the freedom to include an extra discriminator column in your entity tables. In this case, you can apply a formula to calculate a discriminator value for each row:

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<discriminator formula="case when CC_NUMBER is not null then 'CC' else 'BA' end" type="string"/> ... <subclass name="CreditCard" discriminator-value="CC"> ...

Practice 1: First, disable Remote Desktop and Remote Assistance. Then install Service Pack 2, and open the Security Center. Notice whether Windows Firewall is enabled or not. View the Windows Firewall properties, and notice the programs and services listed on the Exceptions tab. Practice 2: Enable Remote Desktop. Then view the Windows Firewall properties, and notice that Remote Desktop has been added to the Exceptions tab. Practice 3: Manually add Windows Messenger to the list of Windows Firewall exceptions. Practice 4: Enable ICF or Windows Firewall with all default settings so that all incoming traffic is automatically filtered. Attempt to ping this system from a remote system, and notice the results. Attempt to map a connection to a shared folder, and notice the results. Disable ICF or Windows Firewall and repeat these steps.