单项选择题

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？（）

A.prtconf -c
B.lscfg -v sys0
C.Check the /unix link
D.Check for JFS2 filesystems

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单项选择题

Sometimes performance is more important than availability （e.g.， in cases where the data can be easily re-created）. Which of the following is the appropriate disk configuration for an application that requires faster writes over availability？（）

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

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

单项选择题

A user has used all of the allowed logon attempts for the userid. Which command can be used to reset the unsuccessful_login_count to 0 for that user？（）

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