A system administrator needs to upgrade the Oracle database from Version 7 to Version 8. Which of the following scheduling concerns should be considered?（） Schedule enough down time to backup, upgrade and reboot. 。 Backup, upgrade, then schedule enough down time to reboot the system.。 Backup, then schedule enough down time to upgrade and reboot the system. 。 There are no scheduling concerns because no down time is required.。
（）的依据是国家和地方按照一定原则在一定时期内所下达的主要污染物排放总量控制指标。 环境容量控制。 目标总量控制。 指令总量控制。 最佳技术经济总量控制。
Which of the following logical volume placement policies is likely to give the best performance in most cases， all other factors being equal？（） INTRA-POLICY set to ’edge’， INTER-POLICY set to maximum。 INTRA-POLICY set to ’center’， INTER-POLICY set to maximum。 INTRA-POLICY set to ’middle’， INTER-POLICY set to minimum。 INTRA-POLICY set to ’center’， INTER-POLICY set to minimum。
A System p administrator plans to install a new system with AIX 5.3 TL5 using a NIM server. Which of the following provide post install diagnostics（） SPOT。 lpp_source。 mksysb。 install CD。
政治环境和经济环境对中低层公共事业管理的影响的特点是（）。 间接迂回。 复杂直接。 巨大。 没有影响。
One of the mirrored disks for the root volume group has failed. Although the logical volumes are mirrored, and the bosboot command was run, the machine will not boot.
What is the most probable cause?（）
