Suppose You Are Creating An XML Web Service Named ListBoxService. This Service Provides Content,such As States, Countries, And Geographical Regions, For Use In Drop Down List Boxes.ListBoxService Contains A Web Method Named RetrieveRegionsListBox. This Method Runs ADataSet Object That Contains Every Geographical Region In The World.RetrieveRegionsListBox Calls A Microsoft SQL Server Database To Load The DataSet Object Withregion Data. You Want To Minimize The Amount Of Time The Method Takes To Return To The Caller.What Should You Do?A. Use A Stored Procedure To Return The Data.B. Store Each DataSet Object By Using The Session Object.C. Set The BufferResponse Property Of The WebMethod Attribute To False.D. Set The CacheDuration Property Of The WebMethod Attribute To An Interval Greater Than Zero.

⟩ Suppose You are creating an XML Web service named ListBoxService. This service provides content,such as states, countries, and geographical regions, for use in drop-down list boxes.ListBoxService contains a Web method named RetrieveRegionsListBox. This method runs aDataSet object that contains every geographical region in the world.RetrieveRegionsListBox calls a Microsoft SQL Server database to load the DataSet object withregion data. You want to minimize the amount of time the method takes to return to the caller.What should you do?A. Use a stored procedure to return the data.B. Store each DataSet object by using the Session object.C. Set the BufferResponse property of the WebMethod attribute to false.D. Set the CacheDuration property of the WebMethod attribute to an interval greater than zero.

D. Set the CacheDuration property of the WebMethod attribute to an interval greater than zero.

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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.

Suppose You are creating an ASP.NET page for selling movie tickets. Users select a region, and then theyselect from a list of cities in that region. The site displays the names and locations of movietheaters in the city selected by the user.Your company, XYZ Brothers, maintains a list of theaters in a database table that includes thecity, name, and street address of each theater. You want to minimize the time required to retrieveand display the list of theater names after a user selects the region and city.What should you do?A. Modify the connection string to add the packet size property and set its values to 8192.B. Add the following directive to the pageOutputCache VaryByParam=?city?C. Add the following directive to the pageOutputCache VaryByControl=?region;city?D. Modify the connection string to keep your database?s connection pool as small as possible.

You use Visual Studio .NET to create an assembly, called XYZAssembly, that will be used byother applications, including a standard COM client application.You must deploy your assembly on the COM application to a client computer. You must ensurethat the COM application can instantiate components within the assembly as COM components.What should you do?A. Create a strong name of the assembly by using the Strong Name tool (Sn.exe).B. Generate a registry file for the assembly by using the Assembly Registration tool(Regasm.exe)Register the file on the client computer.C. Generate a type library for the assembly by using the Type Library Importer (Tlbimp.exe).Register the file on the client computer.D. Deploy the assembly to the global assembly cache on the client computer.Add a reference to the assembly in the COM client application.

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;

You develop a Windows-based application XYZ. XYZ uses a DataSet object that contains twoDataTable objects. XYZ will display data from two data tables. One table contains customerinformation, which must be displayed in a data-bound ListBox control. The other table containsorder information, which must be displayed in a DataGrid control.You need to modify XYZ to enable the list box functionality.What should you do?A. Use the DataSet.Merge method.B. Define primary keys for the Data Table objects.C. Create a foreign key constraint on the DataSet object.D. Add a DataRelation object to the Relations collection of the DataSet object.

Suppose You use Visual Studio .NET to create a Windows-based application. The application includes aform named XYZProcedures (EXP). EXP allows users to enter very lengthy text into a database.When users click the Print button located on EXP, this text must be printed by the default printer.You implement the printing functionality by using the native .NET System Class Libraries with alldefault settings.Users report that only the first page of the text is being printed.How should you correct this problem?A. In the BeginPrint event, set the HasMorePages property of the PrintEventArgs object to True.B. In the EndPrint event, set the HasMorePages property of the PrintEventArgs object to True.C. In the PrintPage event, set the HasMorePages property of the PrintPageEventArgs object toTrue.D. In the QueryPageSettings event, set the HasMorePages property of theQueryPageSettingEventArgs object to True.

Suppose As a developer at XYZ you develop a new sales analysis application that reuses existing dataaccess components. One of these components returns a DataSet object that contains the data forall customer orders for the previous year.You want your application to display orders for individual product numbers. Users will specify theappropriate product numbers at run time..What should you do?A. Use the DataSet.Reset method.B. Set the RowFilter property of the DataSet object by using a filter expression.C. Create a DataView object and set the RowFilter property by using a filter expression.D. Create a DataView object and set the RowStateFilter property by using a filter expression.

Suppose You use Visual Studio .NET to create a Windows-based application that will track camera sales.The applications main object is named Camera. The Camera class is created by the followingdefinitionpublic class Camera {}You write code that sets properties for the Camera class. This code must be executed as soon asan instance of the Camera class is created. Now you need to create a procedure in which youcan place your code. Which code segment should you use?A. public Camera()B. public void Camera()C. public bool Camera()D. public New()E. public Camera New()F. public Camera Camera()

You plan to develop a customer information application CustomEX that uses a Microsoft SQLServer database. CustomEX will be used frequently by a large number of users. Your applicationcode must obtain the fastest possible performance when accessing the database and retrievinglarge amounts of data. You must accomplish this goal with the minimum amount of code.How should you design CustomEX?A. Use classes in the System.Data.OleDb namespace.B. Use classes in the System.Data.SqlClient namespace.C. Use remoting to connect to the SQL Server computer.D. Use interoperability to include legacy COM-based data access components.

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