While performing LVM maintenance， the volume group datavg1 was exported and re-imported.  The volume group is varied online， and the filesystems have been mounted. However， the database will not start. 
What action would most likely resolve this problem？（）  

单项选择题TheClusterAdministratorwantstousediskheartbeatsasanon-IPnetwork.WhatVolumeGroupconsiderationmustbeaccountedforpriortoconfiguringdiskheartbeats？（）

A. The Volume Group major number must be the same on all nodes.
B. The Shared Volume Group must be created with the Big VG format.
C. The Volume Group must be created as Enhanced Concurrent Capable.
D. The "t factor" must be doubled to create the reserved area for disk hearbeats.

单项选择题A cluster with 10 adapters per node is converted to use IPAT address takeover vial IP aliasing.  During the conversion， the customer ran out of IP subnets in the allocated range.  What feature in HACMP can help resolve this issue？（）

A. Disk based heartbeats
B. Heart beating via IP aliasing
C. IP aliases for the non-service addresses
D. A single subnet for all non-standby adapters

单项选择题Due to recent changes in infrastructure， a four-node cluster has been split into two locations， but  is still listed as a single site in HACMP. The location split has proceeded smoothly， the only exception being the serial heartbeats. There are constant errors causing the serial network to go up and down.  What is the best solution to resolve this issue？（）

A. Install the dialback failsafe optional filesets.
B. Change the speed parameter in "smitty tty" to be 38400，8，N，1.
C. Install additional rsct filesets required for non null modem connections.
D. Change the parameters in the Network Module to stop RSCT from changing the speed of the line.

单项选择题Company.com has decided to implement virtual hosts in their web server. The current estimate is to create six virtual hosts with unique URL’s and IP addresses. The solution is going to use the IP aliasing faction in HACMP.  How many resource groups are required to support this configuration？（）

A. 1
B. 2
C. 6
D. 7

单项选择题Company.com has a resource group that contains a database that is accessed by a web client  based on another system. The communication to the database is TCP IP. Occasionally after a failure， the end users get unusual error messages that indicate the database server is not available. It has been determined that the web server is trying to access the database server’s information before it has completed file system recovery after a failure.  How can HACMP affect this problem？（）

A. HACMP can resequence the order to the starting of the various resource group elements by utilizing Dynamic Node Priority.
B. The order of dependency can be controlled though the HACMP resource group configuration if the web server was made to be part of the HACMP cluster.
C. HACMP can delay making the network label available until after the filesystem checks have completed with the "filesystem mounted before IP is configured".
D. The IP service label can be in a second resource group allowing the sequential processing of resource groups to control when the IP service label is made available.