Which file is NOT controlled by the alog command?（）

Apatchhasbeenappliedtotheoperatingsystem.Afterrebooting,thesystemishung.Whichofthefollowingcommandsshouldhavebeenperformedtopreventthesystemfromhanging?（）

A. lppchk, bosboot 
B. lslpp -l, oslevel 
C. installp -C, lppchk 
D. bosboot, synclvodm 

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Whichofthefollowingkdbsubcommandsshouldbeenteredtoobtaininformationaboutaserialport?（）

A. tty
B. stat
C. trace
D. stream

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