A customer has requested an IBM System Storage DS8300 solution to meet the following requirements： - 20% yearly growth - 29，000 IOPS - approximately 50/50 mix of read/write operations - small （4 KB） data transfers The storage specialist has created a Disk Magic model in which each port is capable of approximately 2，900 to 3，100 IOPS. What is the minimum number of ports that should be configured on the DS8300 to handle the projected workload for the first year（） 8。 10。 12。 16。
围堰按材料分类可分为（）等。 混凝土围堰。 过水围堰。 土石围堰。 不过水围堰。 钢板桩格形围堰。
After mirroring rootvg， a system administrator wants to validate that the system will boot correctly. Which of the following tasks must be performed before changing the boot order？（） Run a bosboot -a command。 Mirror the hd5 on the two disks。 Set up another service mode bootlist。 Check the disks using a lsvg -p rootvg command。
按GB7588-2003《电梯制造与安装安全规范》规定，如果轿门的折叠门进入一个凹口内，则折叠门的任何外缘和凹口交叠的距离不应小于（）。 5mm。 10mm。 15mm。
Which are the correct steps， in order， to deal with the loss of an online redo log if the database has not yet crashed？（） a. Issue a checkpoint. b. Shut down the database. c. Issue an alter database open command to open the database. d. Startup mount the database. e. Issue an alter database clear logfile command. f. Recover all database datafiles. a， b， c， d。 b， d， e， c。 a， b， d， e， c。 b， f， d， f， c。 b， d， a， c。
北宋加强中央集权的最突出特点是（）。
