You Have DataSet Object Named LoanCustomersDataSet That Contains Customers Serviced By Theloan Department Of XYZ. You Receive A Second DataSet That Contains Customers Serviced By Theasset Management Department Of XYZ. Both Objects Have The Same Structure.You Want To Merge AssetCustomersDataSet Into LoanCustomersDataSet And Preserve Theoriginal Values In LoanCustomersDataSet.Which Code Segment Should You Use?A. LoanCustomersDataSet.Merge (assetCustomersDataSet)B. LoanCustomersDataSet.Merge (assetCustomersDataSet, True)C. AssetCustomersDataSet.Merge (loanCustomersDataSet)D. AssetCustomersDataSet.Merge (loanCustomersDataSet, True)

⟩ You have DataSet object named LoanCustomersDataSet that contains customers serviced by theloan department of XYZ. You receive a second DataSet that contains customers serviced by theasset management department of XYZ. Both objects have the same structure.You want to merge assetCustomersDataSet into LoanCustomersDataSet and preserve theoriginal values in loanCustomersDataSet.Which code segment should you use?A. loanCustomersDataSet.Merge (assetCustomersDataSet)B. loanCustomersDataSet.Merge (assetCustomersDataSet, True)C. assetCustomersDataSet.Merge (loanCustomersDataSet)D. assetCustomersDataSet.Merge (loanCustomersDataSet, True)

B. loanCustomersDataSet.Merge (assetCustomersDataSet, True)

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You are creating an ASP.NET page for a travel service. The page contains a CheckBoxListcontrol that contains travel destinations. Customer can select favorite destinations to receiveweekly e-mail updates of travel packages.The CheckBoxList control is bound to a database table of possible destinations. Each destinationis ranked according to its popularity. You modify the page to sort the destination list by rank, fromthe most popular to the least popular. The list has three columns.You want the most popular destination to be on the top row of the check box list at run time.Which property setting should you use for the CheckBoxList control?A. Set the RepeatDirection property to Vertical.B. Set the RepeatDirection property to Horizontal.C. Set the RepeatLayout property to Flow.D. Set the RepeatLayout property to Table.

Suppose You are creating an ASP.NET page for XYZ. The page uses string concatenation to gather datafrom multiple e-mail messages and format the data for display on the page.You want to ensure that the page displays as quickly as possible.What should you do?A. Write code that uses the Append method of the StringBuilder object.B. Write code that uses the Substring method of the String object.C. Write code that uses the Concat method of the String object.D. Write code that uses the plus-sign (+) operator to concatenate the strings.

You are creating a Web site for XYZ. You receive product lists in the form of XML documents.You are creating a procedure to extract information from these XML documents according tocriteria that your users will select.When a user makes a request, you want the results of these requests to be returned as quicklyas possible. What should you do?A. Create an XmlDataDocument object and load it with the XML data.Use the DataSet property of the object to create a DataSet object.Use a SQL SELECT statement to extract the requested data.B. Create an XmlDataDocument object and load it with the XML data.Use the SelectNodes method of the object to extract the requested data.C. Create an XPathDocument object and load it with the XML data.Call the CreateNavigator method to create an XPathNavigator object.Call the Select method of the XPathNavigator object to run an XPath query that extracts therequested data.D. Create an XmlReader object.Use the Read method of the object to stream through the XML data

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You create an ASP.NET application that produces sales reports for the XYZ corporation.The sales data is stored in a Microsoft SQL Server database that is used for transactionprocessing. The application consists of complex Transact-SQL statements.Many users report that the report generation is taking longer to run each day. You need toimprove response times.What are two possible ways to achieve this goal? (Each correct answer presents a completesolution. Choose two)A. Use an OleDbDataAdapter indexes exist on the SQL Server tables.B. Ensure that appropriate indexes exist in the SQL Server tables.C. Rewrite your SQL statements to use aliases for all table names.D. Rewrite your direct SQL statements as stored procedures and call the stored procedures fromyour application.E. Configure queries to run in the security context of the user who is running the query.

You ASP.NET application manages order entry data by using a DataSet object namedEXorderEntry. The EXorderEntry object includes two DataTable objects named orderNames andOrderDetails. A ForeignKeyConstraint object named orderDetailsKey is defined between the twoDataTable objects.You attempt to delete a row in orderNames while there are related rows in OrderDetails, and anexception is generated.What is the most likely cause of the problem?A. The current value of OrderDetails.KeyDeleteRule is Rule.Cascade.B. The current value of OrderDetails.KeyDeleteRule is Rule.SetNull.C. The current value of OrderDetails.KeyDeleteRule is Rule.SetDefault.D. The current value of OrderDetails.KeyDeleteRule is Rule.None.

Suppose You are creating an ASP.NET page for XYZ. You create a DataGrid control that displays pastpurchases made by the user. The DataGrid control is populated from an existing database whenthe page is created.The page contains TextBox controls that allow users to update their personal information, such asaddress and telephone number.You need to ensure that the page is refreshed as quickly as possible when users update theircontact information.What should you do?A. Set the Enable property of the DataGrid control to false.B. Set the EnableViewState property of the DataGrid to false.C. Write code in the Page.Load event handler that populates the DataGrid control only when theIsPostBack property of the page is false.D. Write in the Page.Load event handler that populates the DataGrid control only when theIsPostBack property of the page is true.

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Suppose You develop a Windows-based application by using Visual Studio .NET. The application includesa form named XYZForm and a class named Contact. XYZForm includes a button namedcmdCreateContact. You must ensure that your application creates an instance of Contact when auser clicks this button. You want to write the most efficient code possible.Which code segment should you use?A. Contact contact = new Object();B. Contact contact = new Contact;C. Object contact = new Contact;D. Contact contact = new Object;

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