During normal cluster processing in a five-node cluster，one of the nodes unexpectedly crashes. A review of the system dump indicates that a DMS timeout has occurred. The cluster is configured to use disk heartbeats as a Point-to-Point network. What should be done to address the problem with this configuration？（） More disk should be added to the disk heartbeat network，allowing more paths for heartbeats.。 An RS232 network is required to supply a more robust non-IP network when disk heartbeating is implemented.。 The network tunable parameters should be changed to allow more missed heartbeats since the disks may be heavily used.。 An error notification method is required to determine the action to take in response to a failure of the disk heartbeat.。
A cluster administrator is performing fallover testing during a scheduled system outage. Node ’A’ Was forced down and eventually rebooted. When Node ’A’ reintegrates into the cluster， the resource group state is offline. No errors are found in reviewing the hacmp.out file. What could have been done to ensure the resource group was acquired when cluster processing was restarted on Node ’A’？（） Nothing，HACMP does not require them automatically.。 Force the remaining nodes down，then reintegrate them all.。 Select reacquire resources after forced down on start menu.。 Create a setting timer to bring the resource group online.。
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A cluster using IPAT via IP aliasing has four adapters. Normally there are several resource groups that have a total of four service IP labels. When two of the adapters fail， what happens？（） The resource group containing the IP labels changes to an "offline" state.。 The IP service labels of the failed adapters relocate the surviving adapters.。 Nothing because the resource groups wait for the adapters to become active again.。 The resource groups containing the IP labels of the failed adapters migrate to a backup node.。
运行途中空气弹簧爆破，应关闭通向空气弹簧的截断塞门，限速（）及以下速度运行。
