放牧家畜的结构有哪些层次？科学设置家畜结构需要考虑哪些因素。
An administrator suspects problems on a SCSI hard disk， but upon running diagnostics， no errors were found. What must be done to check the condition of the drive？（） ["Run diag and select the ’Certify Media’ task.","Perform a read and write test on the disk and monitor errorlog.","Update the disk firmware to the latest level and monitor errorlog.","Format the disk to ensure bad blocks are omitted from the disk layout."]
嗜碱微生物是指那些能够（）生长的微生物 ["在冷的温度下","在高压下","在高温下","在高pH值下"]
差应激
An administrator has a two-node PowerHA cluster in a mutual takeover configuration. He needs to updatefrom 5.5 service pack 1 to 5.5 service pack 2. Which of the following actions will perform the updates with norisk of disruption to applications running in the cluster？（） ["Unmanage resource groups on all nodes， update the cluster filesets， start cluster services on all nodes，ensure cluster services stabilize","Update the cluster filesets on all nodes. Run ’refresh -s clstrmgrES’ on one node， wait for the cluster tostabilize， repeat for all other nodes","Unmanage resource groups on one node， update the cluster filesets， start cluster services. Wait for thecluster to stabilize and repeat for all other nodes.","Bring resource groups （RGs） online on all nodes concurrently， bring RGs offline on one node， update thecluster filesets， bring RGs online， repeat for all other node"]
原件
