单项选择题 A client needs to be able to install a new local printer, but does not currently have permission to do so. Which of the following is the BEST user group to put the client in, to allow the printer to be installed?（）

单项选择题 Which of the following commands will repair boot sector blocks after a virus has been removed?（）

单项选择题 A technician is trying to connect from a home computer to their office computer, but cannotconnect via Remote Desktop. Which of the following ports needs to be open for RDP traffic to be allowed?（）