单项选择题
A system’s backups are failing. Error log analysis indicates that there is either a hardware or media problem. Which command is used to determine if there is a hardware problem with the tape drive？（）
A.diag
B.lscfg
C.lsdev
D.cfgmgr
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相关考题
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单项选择题
Asystemadministratorwouldliketoverifytheuserdefinitionsinthe/etc/passwdfile.Whichofthefollowingcommandswillaccomplishthis？（）
A.usrck
B.sysck
C.lssec
D.lsuser -
单项选择题
Asystemadministratorhasbeenaskedtolockaspecificloginaccount.Whichofthefollowingcommandsisusedtoaccomplishthis？（）
A.pwdck
B.usrck
C.chuser
D.rmuser -
单项选择题
Auserwouldliketheirshellprompttoreflectthecurrentdirectory.Whichofthefollowingenvironmentvariablescanbesettoaccomplishthis？（）
A.PS1
B.PATH
C.PROMPT
D.LOCPATH
