单项选择题 During a NIM install, the system stops with the LED code 611.What is the cause of the issue?（）

单项选择题 Which command should an administrator use to view files and volume group backup information from a mksysb called server1.mksysb that is found in /backups?（）

单项选择题 Which command will allow an administrator to view the primary and secondary dump devices?（）