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In this practice, you configure the DNS server on Computer1 to answer recursive que ries for Internet-based DNS names from Computer2. You then initiate a recursive query from Computer2 and monitor the results. Because Computer2 is assigned a private address, it can communicate with the Internet only by means of an address translation service such as Network Address Translation (NAT) or ICS. As a result, the first step in this practice is to configure ICS on Computer1.

How volatile is the data Data is said to be volatile when it changes frequently. As a general rule, the more volatile the data, the more regularly you should back it up. For example, readonly databases do not normally change and therefore do not need to be backed up regularly. A database whose data changes once a day, however, should be backed up daily. And a database whose data is continually changing needs to backed up repeatedly throughout the day.

To hide columns or rows with details in table and matrix report items To completely hide a table or matrix item To hide other report items

Cancelling the call is particularly relevant because there are times when you might decide that you don t want to make the user wait longer for a method to complete, so you decide to cancel execution. Polling, a system that checks the execution status of an asynchronous method and responds accordingly, is discussed in the next lesson, but for the time being, assume that you have somehow made a determination that you want to cancel execution. All that is needed is a call to the built-in CancelAsync method. If the event handler is set up properly (this is an automatic process) and you have code to check for a cancellation as shown in the previous code example, there s really nothing more that needs to be done to handle this situation.

12. In the Notes field, type the following paths to represent the folders that have permissions assigned to this group: \\server23\data$\finance\budget \\server32\data$\finance\revenue projections 13. Click OK. Exercise 2 Delegate Management of Group Membership In this exercise, you will give Mike Danseglio the ability to manage the membership of the ACL_Budget_Edit group. 1. Open the Properties dialog box of the ACL_Budget_Edit group. 2. Click the Managed By tab. 3. Click the Change button. 4. Type the user name for Mike Danseglio and click OK. 5. Select the Manager Can Update Membership List check box. Click OK. Exercise 3 Validate the Delegation of Membership Management In this exercise, you will test the delegation you performed in Exercise 2, Delegate Management of Group Membership, by modifying the membership of the group as Mike Danseglio. 1. Open a command prompt. 2. Type the following command: runas /user:Username cmd.exe, where Username is the user name for Mike Danseglio. 3. When prompted, enter the password for Mike Danseglio. A new command prompt window appears, running as Mike Danseglio. 4. Type the following command and press Enter:

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On computers that are equipped with a Preboot Execution Environment (PXE) compliant network adapter, you can start the computer from a server on a network instead of using a floppy disk, CD, or hard disk. A computer with a PXEcompliant network adapter broadcasts its presence on the network. A server then provides the computer with the information that is necessary to access the RIS server. After the computer starts, installation can happen automatically, or the RIS server can allow the user to select an operating system to install.

//C# SqlConnection conn = new SqlConnection(); String connStr = @"Data Source=.\SQL2005STD;" + "Initial Catalog=AdventureWorks;" + "Integrated Security=SSPI;" + "MultipleActiveResultSets=True;"; conn.ConnectionString = connStr; conn.Open(); //Do some processing conn.Close(); 'VB Dim conn As New SqlConnection Dim connStr As String = "Data Source=.\SQL2005STD;" + _ "Initial Catalog=AdventureWorks;" + _ "Integrated Security=SSPI;" + _ "MultipleActiveResultSets=True;" conn.ConnectionString = connStr conn.Open() 'Do some processing conn.Close()

When resources are protected by both share and NTFS permissions, calculating effec tive permissions can be a little tricky. When a user cannot access a particular resource, you have to take into account the share permissions that are applied and the NTFS permissions that are applied, and then take the more restrictive of the cumulative permis sions for both. When a user is a member of more than one group, or if group membership has been recently changed, the problem of calculating effective permis sions is exacerbated.

However, if there are ties, RANK assigns the same value to each row that is tied and then skips to the next value, leaving a gap in the sequence corresponding to the number of rows that were tied. The following examples show how RANK is applied to duplicates as well as within each aggregate grouping: