You work as an ASP.NET Web Application Developer for SomeCompany. The company uses Visual Studio .NET 2010 as its application development platform. You create an ASP.NET Web application using .NET Framework 4.0. The Web application connects to a SQL Server database. You use the ADO.NET Entity Framework to handle persistence-ignorant entities. You create an ObjectContext object named ObjContext. Subsequently， you change properties on numerous entities. You are required to save the changed entity values in the SQL Server database. Which of the following code segments will you use？（） ["ObjContext.SaveChanges（SaveOptions.DetectChangesBeforeSave）；","ObjContext.SaveChanges（SaveOptions.AcceptAllChangesAfterSave）；","ObjContext.SaveChanges（SaveOptions.All）；","ObjContext.SaveChanges（SaveOptions.None）；"]
工艺专业化的优缺点？
You are developing an application to perform mathematical calculations. You develop a class named CalculationValues.You write a procedure named PerformCalculation that operates on an instance of the class.You need to ensure that the user interface of the application continues to respond while calculations are being performed.You need to write a code segment that calls the PerformCalculation procedure to achieve this goal.Which code segment should you use？（） ["A","B","C","D"]
简述流水线生产的基本特征。
Your corporate network has a member server named RAS1 that runs windows server 2008. You configure RAS1 to use the routing and remote access service (RRAS). The companys remote access policy allows members of the domain users group to dial in to RAS1. The company issues smart cards to all employees. You need to ensure that smart card users are able to connect to RAS1 by using a dial-up connection. What should you do?（） ["Install the network policy server (NPS) on the RAS1 server.","Create a remote access policy that requires users to authenticate by using SPAP.","Create a remote access policy that requires uses to authenticate by using EAP-TLS.","Create a remote access policy that requires uses to authenticate by using MS-CHAPv2."]
简述用户调查法的优缺点。
