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 server is at base AIX 5.3. What action needs to be taken to apply the new technology level to the server？（）

单项选择题 Howcanadirectorynamed/dir1beexcludedduringarestoreoffilesbackedupbynamewiththebackupcommand？（）

单项选择题 An administrator suspects someone is modifying a sensitive file， and wants to log access information for this file. Which of the following AIX component accomplishes this？（）