[单选]

You create a Microsoft Windows Installer file for a Windows Presentation Foundation (WPF) application that requires Microsoft .NET Framework 4. You need to ensure that the installation starts only if .NET Framework 4 is already installed on the computer. 
What should you do?（）

Photoshop中CMYK和灰度两种模式都能用于印刷。 记名股 You need to design an access control strategy for the marketing application. You solution must minimize impact on server and network performance. What should you do？（） Require client computers to connect to the marketing application by using a VPN connection。 Use IPSec to encrypt communications between the servers in the New York and Atlanta offices。 Require the high security setting on Terminal Services connections to the marketing application。 Configure all marketing application Web pages to require SSL。 十八届四中全会指出，加强备案审查制度和能力建设，把（）纳入备案审查范围，如有违宪违法即依法撤销和纠正。 行政立法。 所有规范性文件。 法律、法规和政策。 法律性文件。 You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5. The application consumes an ASMX Web service.  The Web service is hosted at the following URL.  http：//www.contoso.com/TemperatureService/Convert.asmx  You need to ensure that the client computers can communicate with the service as part of the <system.serviceModel> configuration.  Which code fragment should you use？（） A。 B。 C。 D。

You create a Microsoft Windows Installer file for a Windows Presentation Foundation (WPF) application that requires Microsoft .NET Framework 4. You need to ensure that the installation starts only if .NET Framework 4 is already installed on the computer. 
What should you do?（）