单项选择题 While reviewing the hacmp.out after a node failure，an administrator realizes that the custom Event queue_down did not execute. The queue_down event shows up when a list of custom events is displayed.  What would be the next logical step to resolve this problem？（）

单项选择题 The IP subsystem fallover behavior of a two-node cluster is being testing in a large client  organization. One of the tests is to simulate a network_down event and verify that HACMP movesthe single resource group to the standby node.  What is the best way to simulate a network down condition？（）

单项选择题 Followingasuccessfulclusterfallover，clstatreturnsnostatus，thesnmpinfocommandhangs.AllClusterresourcesappeartobeactive.Whatshouldbedonetoresolvethisproblem？（）