单项选择题 Theserverroomthatanadministratormanageshasjustcaughtfire.Whichofthefollowingisthe FIRSTthingthattheadministratorshoulddo？（）

单项选择题 A user cannot access files on /deps/it directory, the administrator verifies permissions are set for the directory. Which of the following actions need to be performed to only grant read access to the user on the IT directory?（）

单项选择题 Atechnicianisunabletoejectatapefromadrivewhenpressingtheejectbutton.Whichofthe followingisMOSTlikelythecause？（）