70-310 XML Web Services and Server Components with Visual Basic.NET Exam Questions

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70-310 XML Web Services and Server Components with Visual Basic.NET

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Demo Question 9.

You have developed a serviced component called StockBrokingApp. You need to ensure that that StockBrokingApp does not excute if administrators turns off security for the COM+ application. What should you do?

A. To the project source code, add the following attribute: <Assembly: ApplicationAccessControl(AccessChecksLevel:= AccessChecksLevelOption.ApplicationComponent)>
B. To all methods, add the following attribute: <SecurityRole("Administrators", False)>
C. To the beginning of all methods, add the following code segment: IfNot ConnectUtil.IsSecurityEnabled Then ContextUtil.DisableCommit() End If
D. To the beginning of all methods, add the following code segment: IfNot ContextUtil.IsSecurityEnabled Then Throw New SecurityException(_ "Security must be enabled.") End If

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Answer: D

Explanation: We use ContextUtil.IsSecurityEnabled property to decide whether role-based security is active in the current context. If it is not active we throw a securityException. This will prevent StockBrokingApp from executing if security is disabled.