单项选择题 AclusterusingIPATviaIPaliasinghasfouradapters.NormallythereareseveralresourcegroupsthathaveatotaloffourserviceIPlabels.Whentwooftheadaptersfail，whathappens？（）

单项选择题 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’？（）

单项选择题 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？（）