单项选择题
Which installation method enables the quickest recovery in the event of failure when upgrading from AIX 5.3 to AIX 6.1?（）
A.Use alt_disk_install. B.Apply the upgrade without commit. C.Use a backup image from a NIM server. D.Use a mksysb image from a locally attached DVD-RAM.
单项选择题 Which command will display the current control key settings？（）
单项选择题 Which command will change the user webserver’s shell toksh93？（）
单项选择题 Which command will set the core size file to unlimited for the user‘webapp’？（）
