Which of the following commands would a system administrator run tovalidate /etc/tunables/nextboot after manually editing（）

单项选择题Howcanasystemadministratordetermineifasystemisrunningin32-bitor64-bitmode（）

A.Use the Is -al to see if/unix is linked to /usr/lib/boot/unix_64
B.Check the /etc/inittab to see if there is a load64bit entry
C.Use ’prtconf -c1 to see if the system is 64-bit enabled
D.Use the Islpp command to see if the bos.mp64 fileset is installed

单项选择题Following a system boot， the display indicates that previously detected hardware is missing.  Which of the following commands would identify the missing hardware（）

A.diag
B.Iscfg
C.cfgmgr
D.Isslot

单项选择题Whichdiskconfigurationprovidesthefastestwriteperformancewithfaulttolerance（）

A.RAID 0
B.RAID 6
C.RAID 5
D.RAID 1+0

单项选择题An administrator plans to attach an IBM DS6000 and needs to know if the fibre channel adapter is at the latest firmware level.  Which of the following is the fastest way for the administrator to determine the  atest supported microcode level （）

A.Call Techline
B.Validate via DS6000 menu
C.Access IBM Storage Website
D.Contact the IBM Business Partner

单项选择题Duringreboot，thesystemhangswithanLED0554messagethatmeans， Thebootdevicecouldnotbeopenedorareadfailed. Whichofthefollowingrecoveryproceduresshouldbetaken（）

A.Boot in maintenance mode and use fsck to check hd5.
B.Boot in maintenance mode， access the rootvg and check the /etc/inittab for corruption.
C.Boot in maintenance mode， access the rootvg and rebuild the boot image using the bosboot command.
D.Boot in maintenance mode， and reset the root password.