单项选择题
A./usr/bin/errmsg
B./usr/lib/errdemon
C./usr/lib/errlogger
D./usr/bin/errinstall
单项选择题 Asystemadministratorhasatwo-diskvolumegroup（testvg）withonelogicalvolume（testlv）whichhasjustbeenmirroredacrossbothdiskdrives.Whichofthefollowingcommandscanbeusedtoturnoffquorum？（）
单项选择题 Whichofthefollowingcommandswillremovethehardwaredefinitionofthetapedrivermt0fromasystem？（）
单项选择题 Asystemadministratordidnotreceivearesponsewhileattemptingtopingloopback.Whichofthefollowingwouldmostlikelyresolvethisproblem？（）