单项选择题
A.Restart the Windows Defender service.
B.Repair the Microsoft Location Finder program.
C.Download and install the appropriate files from Microsoft Windows Update.
D.Download and install the latest Windows Defender application from the Microsoft Web site.
单项选择题 You need to identify if malware is causing performance issues on your computer. What should you do？ （）
单项选择题 You use two user accounts for your computer： standard user and administrator. You log on to your computer as standard user but are unable to make advanced configuration changes. You need to make advanced configuration changes while you are logged on as a standard user. What should you do？ （）
单项选择题 You need to configure the local security policy setting to request a user name and password when you make changes to the computer system. What should you do？（）