A system administrator is considering enabling the 64-bit kernel but first must determine if the system hardware will support 64-bit. How would this be accomplished in AIX 5L？（）

单项选择题Sometimesperformanceismoreimportantthanavailability（e.g.，incaseswherethedatacanbeeasilyre-created）.Whichofthefollowingistheappropriatediskconfigurationforanapplicationthatrequiresfasterwritesoveravailability？（）

A.RAID-1
B.RAID-5
C.RAID-0+1
D.RAID-0

单项选择题AsupportspecialiststartedtoapplyanAPARonasystembyinsertingthetapeintothetapedrive，andloadedthefixusingsmittyinstallp.Thefollowingerrormessageisdisplayed： tapenotinbackupformat Whichofthefollowingwillresolvethisproblem？（）

A.Change density setting to 2
B.Set tape device to /dev/rmt0
C.Set block size to 0 for variable
D.Enable compression on tape device

单项选择题Auserhasusedalloftheallowedlogonattemptsfortheuserid.Whichcommandcanbeusedtoresettheunsuccessful_login_countto0forthatuser？（）

A.usrck
B.chsec
C.chuser
D.passwd

单项选择题WhichofthefollowingisthedefaultaccesscontrollistfilefortheResourceManagementandControl（RMC）subsystem？（）

A./var/rmc/ctrmc.acls
B./etc/ctrmc/rsct.acls
C./etc/security/rsct.acls
D./usr/sbin/rsct/cfg/ctrmc.acls

单项选择题Asystemadministratorissuedtheerrptcommandandhadnoresults.Thesystemadministratordeterminedthaterrorloggingwasturnedoff.Whichofthefollowingcommandsshouldbeusedtostartloggingsystemerrors？（）

A./usr/bin/errmsg
B./usr/lib/errdemon
C./usr/lib/errlogger
D./usr/bin/errinstall