单项选择题
A.Update Installation
B.Migration Installation
C.Preservation Installation
D.New and Complete Overwrite Installation
单项选择题 AsystemadministratorwilluseamksysbfromauniprocessormicrochannelserverrunningAIX5.1toinstallamultiprocessorchrpserver.Whatelseisrequired？（）
单项选择题 AsystemadministratorwillbemigratingaserverfromAIX5.1toAIX5.2andisuncertainiftheapplicationrunningontheserverwillfunctionproperlyafterthemigration.WhatisthefastestwaytoreturntothepreviousAIXleveliftheapplicationdoesnotwork？（）
单项选择题 AsystemadministratorneedstoquicklymigrateamachinefromAIX5.1toAIX5.2.Theadministratorwillonlybeallowedenoughdowntimetorebootthemachine.Whichinstallationmethodshouldbeusedtoaccomplishthistask？（）