单项选择题 You work as a Web Developer at Certkiller.com. You create a Web application using MicrosoftASP.NET 3.5.  Certkiller.com hosts the application in Microsoft Internet Information Services 7.0. You attempt tobrowse the application and receive the following error message：  Service Unavailable    HTTP Error 503. The service is unavailable.   You check and discover that you are able to browse successfully to other application that formspart of the same IIS Web site. The hosted applications on the network make use of ASP.NET 3.5.There are not previous versions of ASP.NET is installed. You need to resolve this error as soon aspossible.  What should you do？（）

单项选择题 You work as a Web Developer at Certkiller.com. You make use of Microsoft ASP.NET 3.5 tocreate a Web application.  A page in the application holds the code that calls the Write and Warn methods of theTraceContext class. The code also adds an instance of EventLogTraceListener to the System.Diagnostics.Trace.Listeners collection. You need to ensure that the Write and WarnActualTests.commethods of the TraceContext class will write ASP.NET trace messages to the event logautomatically. You have to configure the Web application to accomplish this. What should you do？（）

单项选择题 Certkiller.com has employed you as a system administrator. You are in the process of creating anASP.NET AJAX application using .NET Framework v3.5.  You receive an instruction from management to debug the JavaScript code in the application. Youthen attach Microsoft Visual Studio 2008 debugger to the Microsoft Internet Explorer instance. Youneed to make sure that the details of the client side object on the debugger console is displayedon the application.  What should you do？（）