单项选择题
A.23
B.443
C.8080
D.3389
单项选择题 Aclienthascalledwithconcernsthattheircomputerproblemhasnotbeenresolvedbytheonsitetechnicianwhohasleft.Asthetechnicianssupervisor，whichofthefollowingistheBESTcourseofactioninthissituation？（）
单项选择题 Atechniciandeploysacomputerinapubliclibraryandwantstogivetheabilityforauserwithoutanaccounttousethecomputerwithlimitedpermission.Whichofthefollowingaccountswouldthetechniciansetup？（）
单项选择题 AclienthasbeenunabletofixcorruptionofsystemfilesanddoesnothaveabackuporanAutomatedSystemRecovery（ASR）disk.WhichofthefollowingistheBESTactiontotakenext？（）