单项选择题
A.lppchk
B.instfix
C.fixdist
D.maintlvl
单项选择题 AcustomerhasapSeriesthatneedstobeupgradedfromAIXVersion5.1toAIXVersion5.2.Thecustomerwantstoretain/etc/passwd.Whichofthefollowinginstallationtypesshouldbeused？（）
单项选择题 AproductionsystemneedstobeupgradedfromAIXV5.1toAIXV5.2.Alllogsandusersneedtobesaved.Whichinstallationmethodwillaccomplishtheupgrade？（）
单项选择题 AsystemadministratorwilluseamksysbfromauniprocessormicrochannelserverrunningAIX5.1toinstallamultiprocessorchrpserver.Whatelseisrequired？（）