单项选择题 All client computers on your company network run Windows 7 and are members of a Windows Server 2008 R2 domain. The R&D department staff are local administrators on their computers and are members of the R&D global security group. A new version of a business software application is available on the network. You plan to apply an AppLocker security policy to the R&D group. You need to ensure that members of the R&D group are not allowed to upgrade the software. What should you do?（）

单项选择题 Your company has client computers that run Windows 7 and client computers that run Windows XP Professional. You enable the Network Discovery feature on the Windows 7 computers. You discover that the Windows XP computers do not appear on the network map. You need to ensure that all client computers appear on the network map. What should you do?（）

单项选择题 Your company has a main office and a branch office. The network contains an Active Directory forest. All users on the network access the Internet from their computers. The company hires a temporary employee who has his own portable computer. The employee connects his portable computer to the network. When the employee attempts to join the computer to the domain, the connection fails. A help desk technician reports the following about the employee. He has a domain user account.His computer can access Internet Web sites.His computer can contact domain controllers by using the domain controllers IP addresses. You need to ensure that the employees computer can join the domain. The solution must ensure that the computer can access resources on the Internet. What should you do?（）