Which of the following statements is mot correct about mirroring?（） Mirroring, with the write-verify option turned on, can be used to increase performance.。 Mirroring is a better choice that disk-striping, for large sequential-access file system when one is looking for performance.。 Mirroring, with a parallel-scheduling policy, may improve I/O read-operation performance.。 Mirroring, with maximum inter-disk allocation policy, is used to enhance availability.。
国际环境主要从（）方面影响公共事业管理。 基本政策。 方法。 手段。 本国国际地位。
Company.com complains that an outage is required when adding a new filesystem to cluster. The System management function of HACMP （C-SPOC） functions in which manner when adding filesystems to a cluster？（） Adds to all nodes with the cluster running.。 Adds to all nodes with the cluster stopped.。 Adds with the cluster running，uses "Lazy Update" to perform the logical volume synchronization.。 Adds to all nodes with the cluster running but requires the volume groups to be exported andimported after.。
决定着教育本质的同一的、稳定的、固有的东西是（） 社会实践活动。 交往活动。 人的培养。 社会经验的传递。
空气波的传播速度约为（）。 300m／s。 330rn／s。 350m／s。 400m／。
The system administrator notices that there is an I/O bottleneck on one of three disks in datavg volume group. This problem disk contains the JFS log， loglv00 and one filesystem， /mydatabase. There are no other logical volumes on this disk. Which of the following options would be the best solution？（）
