[单选] Which of the following phrases is TRUE regarding monitoring disk I/O with iostat？（）

简述变流器操作面板上按键功能 An AIX server will not boot in normal mode and the server must be booted into maintenance  mode to rebuild the boot logical volume. A NIM master is not defined in this environment.  How is the system booted into maintenance mode to perform this task （） Apply power and when the SMS menus appear press 5 repeatedly to enter a maintenance boot automatically. The system will present a maintenance shell eventually.。 Boot media such as CDROM or Tape is required to boot into maintenance mode. When inserted into the proper device the system automatically boots into maintenance mode when it can not boot into normal mode.。 Apply power and the server automatically boots into maintenance mode where you can select your disk to rebuild the boot logical volume.。 Boot media such as CDROM or Tape is required and an administrator must select the proper SMS menus to get into maintenance mode.。 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。 质量事故发生后，（）签发《工程暂停令》。 建设单位质控经理。 施工单位质控经理。 监理单位现场代表。 总监理工程师。 Which of the following is an optional NIM resource for a diskless client?（） root。 spot。 home。 paging。 Which of the following phrases is TRUE regarding monitoring disk I/O with iostat？（）