A two-node cluster provides NFS exports to a variety of UNIX clients. During fallover testing，it is determined that some clients are unable to mount the exported filesystems after fallover，and before node reintegration. It is verified that the filesystems belong to a resource group and are correct in /usr/es/sbin/cluster/etc/exports. 
Which of the following may provide a possible solution to this problem？（）  

单项选择题A new administrator is performing fallover testing on a two-node cluster and is concerned that the cascading resource group belonging to Node ’A’ did not reintegrate properly after the cluster was restarted on Node ’A’. A stable cluster is reported by clstat，and clRGinfo reports the resource group online on Node ’B’.  What type of configuration would cause this type of behavior？（）

A. The resource group DNP has been configured.
B. The resource group option CWOF has been enabled.
C. The resource group option Inactive Takeover is set.
D. A resource group fallback timer has been configured.

单项选择题Company.com with a newly installed cluster has been checking the logfiles to determine if the  cluster has had any recent activity. The non-IP RS232 heartbeat connection seems to be having a difficulty. The serial network goes down，and then a couple of minutes later comes back up again. This pattern is repeated many times in the log.  If this system was installed without regard to best practices， what is the most likely problem with the serial network？（）

A. The serial port is malfunctioning and needs to be repaired.
B. The baud rate is incorrectly specified in the AIX devices configuration.
C. The serial port is not a port approved to support HACMP heartbeat traffic.
D. The baud rate is incorrectly specified in the HACMP interface configuration.

单项选择题Duringaclusterfunctionalitytest，andadministratorperformsagracefulstopforNode’B’inathree-nodecluster.WhatistheexpectedstateoftheclusterafterNode’B’successfullycompletes？（）

A. All cluster resources halt on Node ’B’，and one or both surviving nodes will gracefully acquire the resources.
B. All cluster processes halt on Node ’B’，the cluster resources remain active，and the remaining  nodes take no action.
C. All cluster processes stay active on Node ’B’，cluster resources are halted，and the remaining nodes take no action.
D. All cluster resources will stop，cluster processes halt on Node ’B’，and the remaining cluster nodes take no action.

单项选择题During the process of fallover testing， a client server database needs to be tested. On the AIX Server， start stop cleanup scripts and server application functionality have been tested.  Before moving onto the next step of fallover testing，what action must be completed？（）

A. Run who -a and validate that client connections are restored.
B. Verify that the client side application is functioning properly.
C. Check hacmp.out log file to validate that the application server started.
D. Verify that the application will successfully stop and restart on the fallover node.

单项选择题Company.com has crated a process application monitor for an application that is initiated by a  c   Shell script. The application monitor is not functioning as designed.  What could be the issue with eh application monitor？（）

A. A process monitor cannot monitor an application started by a shell.
B. For process monitors to function correctly， they must use the "korn" shell.
C. A custom monitor cannot de3termine the status of applications started by shell scripts.
D. The process monitor script is not existing with a zero return code after checking the status of the application.