单项选择题 The local library has several public desktops and is concerned about PCs being opened andcomponents being stolen. Which of the following could prevent this?（）

单项选择题 A user states that all their incoming mail is showing that it is behind three hours. All other users have the correct time. Which of the following should the technician check?（）

单项选择题 Jill, a technician, is tasked with installing BitLocker on all the machines in an office. Which of the following may the users experience?（）