[单选]
You are developing an application that performs file backups in the background. The background application will host a Windows Communication Foundation (WCF) service and must be active as soon as the machine is running. The background application will not have a user interface. A front-end application will consume the WCF service and will provide the user interface.You need to choose a host environment for the WCF service.
Which hosting environment should you choose? （）

A . Microsoft Internet Information Services (IIS) 6.0
B . Windows Process Activation Services (WAS)
C . A Windows Forms application
D . A Windows Service

（）是我国新石器时代制陶工艺中最成功的装饰手法彩绘。刻画。堆贴。拍印。你正在创建一个用于成员管理的 Web 站点。它的功能依据用户所属角色不同而不同。其中，Web 站点使用 ASP.NET 成员管理相关控件进行帐户的创建。现在，你需要确定一个用户是否是指定角色的一个成员，你应该如何做？（）使用Membership.ValidateUser。使用 User.IsInRole.。使用Roles.RoleExists.。使用Membership.GetUser.。在动态调试过程中，采用边界值分析法设计测试用例的方法属于（）。白盒法。黑盒法。条件覆盖法。经验推测法。在动态调试过程中，采用条件覆盖法，即执行足够多的测试用例，使得判断中的每一个条件获得各种可能的结果的方法属于（）。白盒法。黑盒法。等价分类法。经验推测法。职业心理素质

You are developing an application that performs file backups in the background. The background application will host a Windows Communication Foundation (WCF) service and must be active as soon as the machine is running. The background application will not have a user interface. A front-end application will consume the WCF service and will provide the user interface.You need to choose a host environment for the WCF service.
Which hosting environment should you choose? （）

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