单项选择题 An administrator has received an update CD with the latest technology level for AIX 5.3. The current  operating system level of the sever is at base AIX5.3.  What action needs to be taken to apply the new  technology level to the server（）

单项选择题 An administrator is at a remote data center assisting a colleague who is replacing a bad fibre channel  adapter.  Which command can be used to manage a hot plug slot without powering off or rebooting the  server（）

单项选择题 A production system needs to be upgraded from AIX V5.2 to AIX V5.3. All system logs and users need to be saved.  Which installation method will accomplish the upgrade（）