A system administrator issued the errpt command and had no results. The system administrator determined that error logging was turned off. Which of the following commands should be used to start logging system errors？（）

单项选择题Asystemadministratorhasatwo-diskvolumegroup（testvg）withonelogicalvolume（testlv）whichhasjustbeenmirroredacrossbothdiskdrives.Whichofthefollowingcommandscanbeusedtoturnoffquorum？（）

A.chvg -Qn testvg
B.chlv -Qn testlv
C.varyoffvg testvg； varyonvg -Qn testvg
D.varyoffvg testvg； exportvg testvg； importvg -Qn testvg； varyonvg testvg

单项选择题Whichofthefollowingcommandswillremovethehardwaredefinitionofthetapedrivermt0fromasystem？（）

A.rm /dev/rmt0
B.rmdel -s rmt0
C.rmdev -dl rmt0
D.tctl -f /dev/rmt0 erase

单项选择题Asystemadministratordidnotreceivearesponsewhileattemptingtopingloopback.Whichofthefollowingwouldmostlikelyresolvethisproblem？（）

A.Issue startsrc -s loopback
B.Issue startsrc -g tcpip
C.Issue rc.tcpip
D.Reconnect the network cable

单项选择题The etc inittabfileiscomposedofposition-dependententries.Whatisthesecondfieldofan etc inittabfileentry？（）

A.Label
B.Action
C.Command
D.RunLevel

单项选择题AsystemadministratorhasamksysbontapeofanAIX5.2machineandneedstoinstallitonadifferentserver.Howcanthisbeaccomplished？（）

A.Install the base AIX from 5.2 media and then install the mksysb overtop.
B.Mount the tape and use the tar command to install AIX and the rest of the contents of the rootvg.
C.Insert the mksysb tape and a 5.2 base media CD and then boot to maintenance mode and initiate the install.
D.Install AIX 5.2 from base media and then perform an update_all install from the mksysb tape of the original machine.