单项选择题
A support specialist started to apply an APAR on a system by inserting the tape into the tape drive， and loaded the fix using smitty installp. The following error message is displayed：
tape not in backup format
Which of the following will resolve this problem？（）
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
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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 -
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Asystemadministratorissuedtheerrptcommandandhadnoresults.Thesystemadministratordeterminedthaterrorloggingwasturnedoff.Whichofthefollowingcommandsshouldbeusedtostartloggingsystemerrors？（）
A./usr/bin/errmsg
B./usr/lib/errdemon
C./usr/lib/errlogger
D./usr/bin/errinstall
