单项选择题
A.Individually before each node is upgraded
B.Individually before and after each node is upgraded
C.Individually after each node has been upgraded
D.Collectively after all nodes have been upgraded
单项选择题 AnadministratorwillbeperformingaPowerHAupgradeonaclusterfromversion5.3toversion5.5.Whichofthefollowingtaskswillverifyasuccessfulmigration？（）
单项选择题 AcustomerwantstomigratetheirexistingclusterontonewPOWER6hardware，andinadditionrequirestheclustertobemigratedfromPowerHAversion5.3to5.5.GiventhatAIX6.1andPowerHA5.5filesetsarealreadyinstalledinthenewhardware，whichofthefollowingmethodswouldallowthecustomertomaintaintheircurrentclusterconfiguration？（）
单项选择题 Anadministratorhasalegacyclusterrunningversion4.5/ESandwouldliketoupdatetoversion5.5.Whichofthefollowingisavalidupgradepath？（）