风险管理的基本目标是（）。 ["减少风险事故的发生机会","减轻企业、家庭和个人对风险及潜在损失的烦恼和忧患","分散风险、补偿损失","最小成本获得最大安全保障"]
Which of the following commands will only provide a snapshot of average memory usage for a process？（） [" vmtune"," ps au"," iostat"," rmss -m"]
Which of the following tools should be used to display the location of unused physical partitions on a disk drive？（） [" df -k"," lsps"," lslv -p"," fileplace"]
You issue the following command on the RMAN prompt. REPORT NEED BACKUP DAYS 5; Which statement is true about executing this command?（） [" It will display a list of files that need incremental backup"," It will display a list of files that need backup after five days"," It will display a list of files that were backed up in the last five days"," It will display a list of files that have not been backed up in the last five days"," It will apply the current retention policy to determine the files that need to be backed u"]
While adding the forced varyon volume group option， it is decided to create a disk heartbeat Network over the disk paths. Which HACMP function is used to create disk heartbeat devices？（） [" The Disk hearbeat facility is initialized when creating enhanced concurrent mode volume groups through HACMP."," HACMP does not create the disk heartbeat area directly； RSCT facility creates the area used for the disk heartbeat when the device is started by Group Services."," The ’Chdev -v-C
" command creates an enhanced Volume Group from an ordinarilyVolume Group. This creates the heartbeat region on the vfirst disk in the chain."," The disk heartbeat area on the disk is created and initialized when the device is created inHACMP "Extended Configuration -> Extended Topology -> Disk heartbeat facility" smit path.<\/vg-name>"]
简述变流器操作面板上按键功能
