多项选择题 YoucreateMicrosoftWindows-basedapplications.Youcreateanapplicationthatrequiresuserstobeauthenticatedbyadomaincontroller.Theapplicationcontainsaseriesofprocessorintensivemethodcallsthatrequiredifferentdatabaseconnections.Abugisreportedduringtesting.Thebugdescriptionstatesthattheapplicationhangsduringoneoftheprocessor-intensivecallsmorethan50percentofthetimeswhenthemethodisexecuted.Yourunittestforthesamemethodwassuccessful.Youneedtoreproducethebug.Whichtwofactorsshouldyouascertainfromthetester？（）

单项选择题 您最近创建了一个名为ShoppingList 的自定义集合类为当地的超市 。此自定义的类将包含 ShoppinItem 对象具有下面列出的公共属性。* Name* AisleNumber* OnDiscount你要使您的类来循环访问 ShoppingList 集合中，并列出每个产品的Name和AisleNumber，使用 foreach 语句。要实现这一目标的声明相应的代码。您应该使用哪个代码？（）

单项选择题 You work as an application developer at Certkiller .com. You are preparing to run diagnostics on an application by using TraceSwitch objects.  You start by adding the following elements to the application configuration file： You then test the TraceSwitch settings by using the code displayed in the exhibit below：  What represents the output that will be displayed by this test？（）