You Are Creating An XML Web Service Named XYZService. This Service Has A Function NamedWriteMessage That Writes Messages To A Flat File In The CEXServiceLog Directory..You Want To Implement Security For WriteMessage So That WriteMessage And All The Code It Callscan Write Messages Only To The EXServiceLog Directory.Which Code Segment Should You Use?A. Dim FilePermission As NewFileIOPermission (FileIOPermissionAccess.Write, ?CEXServiceLog?)filePermission.Demand()B. Dim FilePermission As NewFileIOPermission (FileIOPermissionAccess.Write, ?CEXServiceLog?)filePermission.Deny()C. Dim FilePermission As NewFileIOPermission (FileIOPermissionAccess.Write, ?CEXServiceLog?)filePermission.PermitOnly()D. Dim FilePermission As NewFileIOPermission (FileIOPermissionAccess.Write, ?CEXServiceLog?)filePermission.Assert()

⟩ You are creating an XML Web service named XYZService. This service has a function namedWriteMessage that writes messages to a flat file in the CEXServiceLog directory..You want to implement security for WriteMessage so that WriteMessage and all the code it callscan write messages only to the EXServiceLog directory.Which code segment should you use?A. Dim filePermission As NewFileIOPermission_(FileIOPermissionAccess.Write, ?CEXServiceLog?)filePermission.Demand()B. Dim filePermission As NewFileIOPermission_(FileIOPermissionAccess.Write, ?CEXServiceLog?)filePermission.Deny()C. Dim filePermission As NewFileIOPermission_(FileIOPermissionAccess.Write, ?CEXServiceLog?)filePermission.PermitOnly()D. Dim filePermission As NewFileIOPermission_(FileIOPermissionAccess.Write, ?CEXServiceLog?)filePermission.Assert()

C. Dim filePermission As New

FileIOPermission_(FileIOPermissionAccess.Write, ?C:EXServiceLog?)

filePermission.PermitOnly()

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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

You create an ASP.NET page that uses images to identify areas where a user can click to initiateactions. The users of the application use Internet Explorer.You want to provide a pop-up window when the user moves the mouse pointer over an image.You want the pop-up window to display text that identifies the action that will be taken if the userclicks the image.What should you do?A. For each image, set the AlternateText property to specify the text you want to display, and setthe ToolTip property to True.B. For each image, set the ToolTip property to specify the text you want to display.C. In the onmouseover event handler for each image, add code that calls the RaiseBubbleEvent()method of the System.Web.UI.WebControls.Image class.D. In the onmouseover event handler for each image, add code that calls the ToString() methodof the System.Web.UI.WebControls.Image class.

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.

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.

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