单项选择题 You create a Microsoft ASP.NET Web application by using the Microsoft .NET Framework version 3.5.  You use Windows Authentication for the application. You set up NTFS file system permissions for the Sales group to access a particular file. You discover that all the users are able to access the file.  You need to ensure that only the Sales group users can access the file. What additional step should you perform？（）

单项选择题 You create a Microsoft ASP.NET Web application by using the Microsoft .NET Framework version 3.5.  The computer that hosts the ASP.NET Web application contains a local instance of Microsoft SQL Server 2005. The instance uses Windows Authentication. You plan to configure the membership providers and the role management providers.  You need to install the database elements for both the providers on the local computer.  What should you do？（）

单项选择题 You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5. You create a class that implements the IHttpHandler interface. You implement the ProcessRequest method by using the following code segment：   01 public void ProcessRequest（HttpContext ctx） {   02   03 }    You need to ensure that the image named Alert.jpg is displayed in the browser when the handler is requested.  Which code segment should you insert at line 02？（）