Automatic error notification can be configured to manage which type of disk error？（）  

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？（）

A. Delete the custom event and add a pre event and synchronize.
B. Synchronize the cluster and recheck the cluster custom events.
C. Create an application server that will stop and start the queues.
D. Add a pre or post event to appropriate cluster events and synchronize.

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？（）

A. Turn off the IP core switch connecting the two nodes.
B. Issue the command "stopsrc -g inetd" on the node that has the resource group.
C. Issue the command "sh /etc/rc.tcpclean" on the node that has the resource group.
D. Simultaneously unplug all network cables from the node that has the resource group.

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

A. Restart all cluster nodes.
B. Verify that cluster.es.client.rte is installed on all nodes.
C. Use chssys -a -d -p -s clcomdES to enable cluster communication.
D. Use the /usr/sbin/snmpv3_ssw-1 command to revert SNMP from version 3 to version 1.

单项选择题Aclusterindicatesthataremotesitehasfailed.WhatfacilitiesexistinHACMP XD：HAGeotoensurethatthefailureisnotjustaTCP IPcommunicationfailure？（）

A. Electronic Service Agent software provides a redundant heartbeat between sites.
B. A non-IP network and Dial Back Fail Safe provide redundant heartbeats between sites.
C. The GeoMirror Devices provide a link validation facility that guarantees the validity between sites.
D. The Site Notification Daemon maintains a heartbeat between sites via short haul Modems/line drivers and dark fibre.

单项选择题Aclusteradministratorhasdefinedacustomerrornotificationmethodthatwillemailandadministratorwhenatemperrorisdetectedonanindividualhdisk.Whatmethodshouldbeusedtotestthisfunctionality？（）

A. sendmail -bi
B. yes >/dev/kmem
C. emulate errlog entry
D. reducevg vgname hdisk#