单项选择题 You have a computer that runs Windows 7. You have an application control policy on the computer. Youdiscover that the policy is not enforced on the computer. You open the Services snap-in as shown in theexhibit. (Click the Exhibit button.) You need to enforce the application control policy on the computer. What should you do?（）

单项选择题 You have a computer that runs Windows 7. You have a third-party application. You need to ensure that onlya specific version of the application runs on the computer. The solution must ensure that all applicationrestrictions are based on the application vendor s digital signature.  What should you do?（）

单项选择题 You have a computer that runs Windows 7. Multiple users log on to the computer. The computer has fiveremovable devices. You need to ensure that users can only access removable  devices that have beenpreviously installed on the computer.  What should you modify in the Local Group Policy ?（）